RE: parker, uggh!
paul, bowtech has very specific tuning gaps. even with the new binary cam bows, if you talk to todd he'll tell you exactly where the cam ought to be, depending sometimes on production date of the bow.
mathews also. if you call bob at mathews and talk to him about proper timing of any cam on any of their bows he'll give you very specific instructions and even send pictures. he'll tell you exactly what peg you better be using, etc. sure, they'll shoot, and you'll hear that line a lot - 'single cams don't have to be timed.' but i always take that to mean they don't feel like fooling with it at the shop. anyway, it was like calling billy bobs bait shop.