Thanks for all of the input. I went to the pro shop at Evergreen Lanes in Everett this afternoon to get a thumb mold made so that I can get all my thumbholes reworked for the same fit. The owner, Matt Surina - PBA Pro, said either weight would be okay. So, with your input and his, I had him order me a 14# Storm Ice Storm. Here's hoping it helps with those d*mn 10s.