Jorge,
Let me tell you what I did with my Cell; maybe it will help, maybe not.
Mine is drilled 4,5"x4.5", pin in ring finger, about 75 degree PAP-pin-MB. With the stock 2000 grit, I can't ues it anywhere locally, even within an hour's drive. (Maybe in this summer's PBA exp Shark pattern?)
When I took it to 4000 grit, I got more length and a full notch more backend. Kind of surprising. Since I bowl on medium-light to medium oil at the most, I could only use it for one game, mostly standing up against the ball return. No fun.
Next I polished it. First I took it down in grit level, because polish on 2000 or 4000 grit is not what I thought would be good. So I sanded it to 600 grit and used Brunswick's High Gloss polish. Since this polish has no abrasive in it, the underlying 600 grit sanding remained, and the polish gave it plenty of length. I didn't have to stand against the ball return either. That 600 grit must have just burned up enough energy for me, my release, and the oil level we had, BECAUSE the Cell kept its even reacting characteristics that we all love so much. No flip on the backend but plenty of backend and carry.
Next, just to experiment, I tried Storm's Xtra Shine, an abrasive polish. This provided only slightly more length, but a lot more backend, closer to a smooth acting pearl, in its backend. I think I like the 600 grit + Brunswick polish better. But that's my preference.
--------------------
"None are so blind as those who will not see." Unofficial Ballreviews.com FAQ