Help please. Have a 15.1lb Rampage, have been using for 3 months, have had finger pain and strain in shoulder to back muscles. Had the shop change the finger pitch and re-drill the thumb for easier release. Low-Med rev,15-16mph avg. speed. The finger pain from knuckle to tip is terrible, especially the ring finger. My friend rolls the TI @ 14.2lb and he loves it. I have had shoulder injury in the past but the most recent problems developed after I got the Rampage. Is it a drilling issue, weight issue, ect...?? I am considering the 14lb TI to see if I can get rid of the pain and try another ball but still want the hit. I bowl 10-20 games a week 6mo a year and every other week the other 6mo. Hope all this info helps as I need relief.