I think the last post nails it.
The magic carpet is equal to about 3 to 4 pieces of tape in back.
Therefore if you have been using less...one often has to open up the back of the thumb about 2 white tape thicknesses.
Most people do this on one ball and if they don't like it....don't open up any other holes. However most people like it!
REgards,
Luckylefty
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Open the door...see what's possible...and just walk right on through...that's how easy success feels..