sorry. wrong forum. I put this into the kitchens area so just disregard.

"When searching for accurate information regarding natural stone countertops the ONLY reliable source is https://www.naturalstoneinstitute.org/  The WORST place to place a seam is directly over a dishwasher." Sarah: Let me direct your attention to the Natural Stone Institute's Detail of Spline Joint Reinforcement drawing 17-D-4 please. Page 14. This is a terrible detail. The last thing you want in a sink seam is a joint that is NOT designed to fail. If the house settles or a top gets out of plane, you want a joint that fails and can be easily remade, not a joint that's going to blow the top of the rail off. Not to mention when Bubba runs out of stainless steel washers and installs one that rusts and blows the countertop apart. As a countertop repairperson with 30 years experience, I have brought this poor detail to their attention to no avail. If you can avoid a seam over a dishwasher, fine, but there is no reason to not make a seam over a modern well-insulated dishwasher. Epoxy a stainless steel cleat under the seam and forget it if it makes you feel better, but I wouldn't bother. The Natural Stone Institute is a fine organization, but they're not Gods. Just men who make mistakes like the rest of us. This sink seam has failed properly. It may have not had the NSI's detail been followed. Would you rather look at this nice do-over or a repaired jagged crack at the end of the cutout or a blowout repair?

I am a fabricator. We do not seam at the sink except in special circumstances. It doesn't make sense to me to have a seam at the busiest location in the entire kitchen. Fabricators "sell" the seam at the sink because it eliminates their risk of a cracked sink rail. However, the vast majority of the time a seam elsewhre is preferable. sink rails can be "rodded", which involves epoxying a steel rod into the underside of the sink rail, to minimize the chance of a crack. when I started my shop I made an arrangement with a local engineering college to do a test of rodded vs. unrodded. The materials science professor (one of my partners teachers) assigned the project to 3 senior engineering students. They built a hydraulic test fixture with computer data acquisition and confirmed that rodded rails are substantially less prone to cracking. (I mention this because there are a lot of "opinions" in the industry about the benefits of rodding and the people that assert that rodding doesn't help are simply wrong.) With rodding and proper care during install most granites can have an undermount sink without a seam at the sink.

I have the same sink and faucet placement as you do. My granite is centered like the whole sink, not at the sink divider. Looks better than if the seam was off center from the window.