I too have TTTF. I cut it to 3 inches, and I have the same issues with it not returning to it's upright appearance as you do. I think cutting to 4 inches for TTTF is too long for a few reasons. First of all it raises the height of the node where the blade meets the stem. This makes the lawn less green, and stemmier when it's cut. If you mow to 4 inches, then that means you are letting the grass get to between 5 and 6 inches. In addition to looking messy and floppy, this also makes the environment for lawn disease better, as the grass will be continually wet. Also a long period of rain in the summer can potentially cause the grass to get to over six inches if it starts at 4+ inches, which isn't a good thing. Most TTTF growers say you should mow at 2-3 inches on the bag, and that's good enough for me. Here's a good link to an overview of how grass is affected by mowing heights, fertilizer, temperature, and other factors. Hope this helps. http://www.purdue.edu/envirosoft/lawn/src/physiology.htm

Here's what I use. http://www.bedbathandbeyond.com/product.asp?SKU=13350086 I also want to revisit seeding rates for a minute. Let's say you were going to just seed TTTF at 10 lbs. per 1000. So that would give you roughly 2.25 million seeds per 1000. If you want a 50:50 mix of TTTF:KBG, then you would still need 2.25 million seeds split in half. This would mean you would use 5 lbs. of TTTF and about 1 lb. of KBG. If you did it the way I previously stated, then you would be using 8 lbs of TTTF (10 lbs minus 20%) and 2 lbs. of KBG. This would give you about the same ratio but the seeding rate would almost be double, approximately 2 million TTTF seeds, and 2 million KBG seeds per 1000, or 4 million seeds per 1000. Too much seed can lead to damping off, and overcrowding of new seedlings, not a good thing. I recommend sticking to amounts that give you the proper number of seeds in addition to the ratio you want. So if the seeding rate for your TTTF is 8-10 lbs per 1000, then use the middle number of 9 lbs per thousand to get the number of seeds to use, which is 2.025 million. Then split that in whatever way you want to get the ratio of seeds. I hope this is clear, if not, let me know.

Most around here, including me, will try to encourage people to avoid "scotts" grass seed mixes. They are far from being good by any means. I was trying to find the % of the Sun & Shade you quoted and all I could find is this.. "Scotts Select Turf "Sun and Shade" (50% Boreal creeping red fescue, 35% Ragnar II perennial ryegrass, 15% Alene Kentucky bluegrass). Boreal is a fancy name for common creeping red fescue. Although it is adapted to shady growing conditions, Boral has none of the bred-in advantages of improved fine fescue varieties. Ragnar II, like all perennial ryegrasses, has no shade tolerance. Alene is a common type bluegrass that ranks at the bottom of the NTEP trials." A further explanation of my statement above. 6-8 hours of sun is the standard for "Full sun", against the misconception of full sun truly being sun all day long. You could really use any of the three cool season grasses and do not need the fine fescues. However, like I said before, any of the newer varieties are not going to visually blend well if you have an old wide blade fescue. ..I also didn't mention the different growing rates if you are to put a KBG or RYE on the fescue. A few days after cutting, it will look uneven. Ultimately the best thing to do would be to kill of the whole thing and start over (assuming you do have an old course tall fescue), but if your really against that, I'd say to overseed it with a turf type fescue. Go to a local garden center for better seed.

Okay, hold on. I had to check out this phenom grass seed. What. A. SCAM. Let's look at what's in it: TEN PERCENT KY BLUEGRASS. They measure those percentages by weight, not the number of seeds. Bluegrass seeds are WAY tinier than fescue seeds, so your TTTF mix will actually turn out to be, what? Thirty or forty percent bluegrass? TEN PERCENT RYEGRASS. The most disease prone of all the cool-season grasses, added to commercial mixes because it germinates very fast and makes people feel happy. SIXTY PERCENT of two types of fescue. they don't say what the remaining 20% is. So your 10% ryegrass will germinate very quickly -- yayy! Then your 60% fescue will come in. Finally, if there is any room left or any sunlight available to the soil; surface, your 10% bluegrass will germinate. Or not. There might already be too much competition. In any case, your bluegrass in that mix will never produce roots that go down that deep. Never ever ever.