ORIGINAL: Matt / PA
Its not the mods and you're exaggerating that you can feelanything after the shot.
It's your cam/axel spacers.
Somebody in the build room left out a cam spacer and the 2 little ones are buzzing against each other on the shelf side of the cam. You can probably drop a finger in there and spin them by hand.
Look closely at the gap between the limb cap and the cam surface, if you can see axel or move the spacer/s by handthen the spacer is wrong.
Throw it in a press,bring the axel out 1/3 of the way to drop the spacers on that side and swap out with a .112" solid single spacer. Thats what I did for mine because when I would flick the cam with my finger to check the mod screws I was getting a buzz on mine.
If you don't have on hand have the shop guy call Bowtech for spacers.
Trust me someone at Bowtech got a punch in the temple for that one but I think a couple got out the door like that.

Its a $.05 / 5 minute fix but annoying nontheless.
I can almost guarantee you that's the problem and it's aquickie fix.