Agree, adjust surface is a big one. I think this is a pearl, if it is polished, by nature it will be flippy. Probably not the best ball to have for control. Given the surface, I would first want to knock off any polish to get the ball to read a bit sooner and to slow it down and burn off some energy. By doing so, that should mellow the backend motion significantly. However it may not fully smooth it out. Additional options are an X-hole on the PAP or on P1 area. Those areas will decrease diff and also help smooth out the ball. As far as layouts go, anything with a pin down layout will generally produce a smoother reaction due to the core being in a more stable position. Also, higher VAL angles will tend to smooth out the backend motion. Your 55*x5"x55* will be an idea, but keep in mind the 5" is a good representation of how much flare you may see. 5" is relatively high. If you want to control the backend motion, you might want to decrease your pin to PAP length to between 2.5" to 4". Just my experience, but surface is the easiest and cheapest solution to try. Good luck.