There's really not enough information for anyone to help you logically.

Your balls are not driving when they hit the pocket area. It could be too strong a ball, it could be too weak a ball. The drilling could be too strong or too weak or the surface might not be right.

Tell us what balls you're using, how they are drilled, what your PAP, axis tilt, ball peed and rotation is, tell us if the balls have the stock surface or if modified, how. Tell us how much oil you're bowling on , what type of lane surface is it?

 

Tell us what ball does work and how it is drilled.

 

15 degree axis rotation says it all.....Try getting at least to 40-60 degrees and it will help you tremendously.....15 degrees axis rotation is going to roll early and have nearly no backend and hit like you are describing unless you are pointing it at the pocket. You want the ball to get into a roll just before it gets to the pins not half way down the lane....  
 

Yes sir!! I would work on getting your ball more around the ball. Keep your hand from getting on top of the ball though that is what will cause you to spin the ball like a top...Here is a link to Tommy Jones release in slow motion, there are other pros releases links on the right of the video as well. I would watch those and use try to best emulate the hand positions.....

 

 http://www.youtube.com/watch?v=pyVY1UFopE4&playnext=1&list=PL939C013E6B428E9E