What is the best solution to keep me from squeezing my bowling ball? I'm developing quite a blister/callous on the outside knuckle of my right hand. Also, it appears that I'm getting a bruise on the same thumb opposite of my fingernail. Any help would be great. For the record, it seems as though I'm getting my mechanics back in sync, since my exteneded layoff. I'm rolling the ball better than ever now. I'm just not happy with my thumb swelling. Thanks.