Do you use thumb slug
Have one ball without slug and always had thumb problems with this ball.
No matter how I polish hole always the same.
SkinPatch from Robbys, or Ebonite X-tra skin is perfect.
Once after long braeak from play I scrach mu thumb skin to the bone.
SkinPatch save my life on tournament two days later.
If problem appearing with thumb slug check your drilling.
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No Split's Too Wide, If You've Got The Balls !!!