I just purchased a Roto Grip Critical Theory and would love some help from you fellow bowlers laying it out.My stats I throw 13.5 mph scored from the quebica ,230 revs,PAP 4 1/8 and 1/4 up, 30degrees of tilt (right handed) and what type of balance hole you recomend as far as gradients.I am looking for the strongest skid/flip type reaction with maximum back end.I bowl on AMF synthetic lanes with a longer THS shot.Also why do i only have luck with pearl balls.when i buy high performance solids dont work.I was thinking 45X5X25

THANKS YOU SO SO MUCH IN ADVANCE FOR THE HELP