this ball has been very unpredictable for me, sometimes it will skid, skid, skid some more then a quarter turn and then skid. other times it will skid skid skid snap 12 boards. i have had a time with the ball myself, first lane 1 i have had this problem with. it is drilled stacked. our house is very heavy oil down to 45 with no wall, carbide bomb loves it , uranium bomb can't stand it. this is also the first diamond core for me , i seem to prfer the bomb core with the flip block myself. i own 2 cherry bombs, a scb, and this uranium thing. i hate to plug it and redrill it but i may have no choice, or just get rid of it. practiced with it the other night, carbide games 177,197...cherry bomb games 193,185.... uranium buzzsaw 192, 144..... very speed and oil sensitive for me. my average is 186 and i have plenty of hand and knowledge of the game, been bowling since 1974.