Good luck man............I feel bad for you. I think there are MANY guys like you out there that are at the mercy of a shop or store clerk that presents themselves as knowing what they are doing.............then they cover their mistakes by saying the rest is no good.
Ya, this is my first bow hunting season, so when I first got my bow I relied on shops to set it up for me. Thanks to this forum and lot's of practice, I'm doing more and more myself. I'll take a look at the tuning guide you suggested.