Hello EAF. Hoping a few can set my mind at ease. I've read quite a bit where some have had difficulty gaining proper clearance to achieve l/r center shot. Suggestions have been to shim the cams to draw the string toward the riser, or the reverse, push it away. Another frequent response is to swap the limbs top to bottom.
I've done all of my bow tuning for 20+ years, but can not afford a new compatible press AND a GT500 at the same time. Therefore, I will be forced to rely on a shop and shop labor to tune the bow after I have it shot in. Not looking forward to that. Therefore, I want to have sufficient knowledge of the bow to ensure that it is correct the first time. This brings me to my questions:
1) How commonplace is this concern? Is it routine to need to adjust the orientation of the lims and/or cams?
2) What is the root cause in bows that need additional modification?
.....A) Are the limbs machined out of square from the attachment at the pocket?
.....B) Are the cutouts for the cam machined off center?
.....C) Is the deflection different across the face of the lims causing the cam to move off center from a twisting or torquing of the limb?
3) Is there a way to check the bow at rest to determine if there is a likely issue before purchase? In other words, is there a standard value that the center of the arrow SHOULD be set at from the face of the riser with a corresponding center shot measurement to the center of the string? I am guessing that if the measurements were begun in reverse- at the rest based on spec, (rather than off the bowstring) AND the cams were skewed left or right, then the center shot would be considerably off when measured back to the string, right?
I know all bows (and shooters) are individual, and slight variances are normal. I'm looking for big-picture knowledge here. Thanks to all who might help settle my concern.