I'm going from 16 to 15 so I bought some used equipment. Rather than redrill it all, I'm making minimal changes until I commit to 15 (also allows me to test various drill patterns).

Question - I have a ball that fits 'well', fingers and thumb are tight enough and span is just a tad shy of normal. However, I simply can't keep my thumb in the ball.

Is this simply a pitch problem? The slug in the ball is a little slick, have tape in the front but nothing in the back. Any help?
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I am my only ignored user