It sounds like Manny, Moe, or Jack might have left the string and cable free to "untwist" themselves while installing the NV's. With your ATA change, it would seem that both are longer than when you took the bow in. Since the ATA is longer than when you took the bow in, then I would think the cable would need to be twisted back to length, as well as more twisting of the string to get the cam back to the correct timing position. According to your specs, it would seem that your string and cable stretched a bit from factory specs, unless the factory specs were off. Your "pro shop" pals just seem to have aggravated the problem.

As far as the recoil goes, I would say from my experiences with "Frankenstein" that if you tighten up the string and cable, you should have a little less recoil and vibration. When I originally put that bow together, my first set of string and cables gave me a 6 3/8 brace height. On the second set, I shortened the ATA with shorter string and cables, and got a 7 1/4 brace height. That increased the draw weight, but the bow had less recoil and vibe with the higher brace and shorter ATA. With that bow being a twin cam, it was a little easier to change things and just twist the cables to get the cams in synch.