I had just got a thumb mold made for me last week.. I was using the Vise ProVII oval thumb sleeves for 2 years, but even with them all 4 balls I use felt inconsistent to me.. [i.e. some needed more tape then others]
So far I like the feel of the mold,the ball I used I had 2 pieces of white tape in, he took one out and made the mold with the other piece still in, which I thought was cool.. So far so good, I like the fit,and feel of it.. And now maybe I can get the same feel in all my equipment..
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Jeff