It is my understanding that the NEW GT pin nocks with larger string grooves will be out shortly.
I ended up re-serving my bowstring TIGHTER and the nocks fit OK...but still a tiny bit tighter than what I want....
I've done this on ONE bow....on my other bows, however, I"m using GT pins with Magnock pin nocks...which, of course, pose zero problems with nock fit or tightness.
field14