Hmm, assuming that the lane is clean and that you do not suffer from oil residue on the back end, I'd suspect the ball losing its energy too early.
Your ball is drilled in the strongest possible way, probably to make it hook as much as possibel with the limited enegry input you provide. Playing in the buffer zone, it could be that the ball simply loses anything you put into it prematurely, and rolls out. The low RG makes energy depletion even easier, and sanding the ball will (or has) made this worse.
What to do? Well, playing a much deeper line (say, between 3rd and 4th arrow) might help, since the aggressive drilling will allow you to play on deeper oil and still have the ball recover.
If this does not wrok, or not enough, I'd also try a finer surface, original Rough Buff or maybe even a polish, just to make the ball slide longer/better through the front part.
If you still feel that the ball moves too early and hits weak, maybe a flare decreasing hole above your PAP could help save more energy for the back part of the lane, but I am not an expert on this.
As a last resort, you might condider a movement of the finger holes, so that the pin would end up further away from PAP, e. g. in the brigde region.
Hope this helps a bit, but at least there are several things to try
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DizzyFugu - Reporting from Germany
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Edited on 4/16/2007 9:10 AM