I know how you feel. Ive been bowhunting for 20+ years and the tuning process gets to me too. Just when my bow starts shooting good, all of a sudden something goes out of wack. STring stretch, loose part, serving gives and nocking point slips,
cam timing off, aaaaaagggghhhhhhh!
To make matters worse. These so called pro shops alot of times are filled with no it alls who definately dont know what they are doing. Instead of setting up your bow correctly to get you close where you need to be, they do everything BY EYE and you end up having to make major corrections instead of minor adjustments.
Todays lightning fast bows seem to make fine tuning even more of an art.
Anyway, I' ll quit rambling on. Try to find a good book on compound bow tuning and learn as much as you can. Good luck and dont give up. [:-]