excessive nitrogen can also cause your leaves to curl under. Looking at your pictures, your leaves are not substantially curling under. Your meals and dolomite are, I believe, in an non soluble form and will thus require some bacterial activity to make them available to the plants, so its very possible they're undernourished. also, if you're applying the fertilzer to the top and relying on wick action to keep the soil moist, it's going to take a lot longer for those fertilizers to break down. Fish emulsion is a high nitrogen source (relatively speaking) and that combined with the insolubility of the meals and dolomite may well be causing the curling. how much (or at what rate) are you applying it? same question for the potassium sulphate. the spots on the stem don't look to bad and could just be hardening off. Keep a close eye on them, but don't sweat it yet. Overall, your plants look healthy. Are the spots spreading onto the leaves?

It's a sow bug or pill bug, sometimes called a roly poly.

The pest I detest the most is the hornworm! They are creepy, blend in so well with the plants that finding them can be difficult, and they can decimate a plant in no time! My new technique for dealing with them? (got this one from somewhere on gardenweb).....cut the little booger in half with scissors!! Gross, but effective and better than having to touch them! (just make sure to label the scissors and don't use them for other things!)

Some of your problems look somewhat normal to me. How much sun are they getting? Water? Fertilizer/nutrition? They look a little under nourished. Also you could use a Daconil spray for fungus, and Sevin for insects.