went to the field today with my used gt that bought off pbn. I was having horriable velocity issues every time i would get on it, it would shoot 3-4 balls perfect and then it would shoot like it was starving for air balls barely making it out the barrel then right back to shooting 3-4 balls perfect.
my dwell was is at 12 so i adjusted it to 13 but still had the same problem.
put in a fresh battery still did not fix the problem.
over the crono it was jumpin +/ - 30psi
i dont get it / any help would be great thanks