Anytime the power is changed (up or down) the trans will adjust itself to it. When you first reset the taps its in "fast learn", once it adjusts ifself to where its shifting well, it will change to "slow learn" mode. So if you were switching power all the time it was probably never setting in to slow learn mode therefore making rapid adjustments and changes to compensate.
You have probably already done a fair amount of damge to the trans. Not only from limping it from to much power, but also the constant switching of power because the trans never gets learned in and is always getting hit with something different. People would be much better off without the switchable tuning. But everyone thinks they need a "smoke tune" or a "lope tune" or a "tow safe tune" and its hard on transmissions, stock or built.
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