Back in 2008 we used the AM SuperShifter with great success and highly recommend the product. We did learn the hard way that 60 psi and autoshifting will make short work of the roll pins as we blew one in Portland and the other just before the final match in Hawaii against 233 and 254 (not that it would have made a difference, we were outgunned
) . As mentioned by others, the best solution is to run a secondary regulator and reduce the pressure.
Having said that, If you are presently at a regional and you have the older style gearbox with a broken roll pin and you don't have access to a new one, do what we did, buy a 3/32" drill bit cut it short to the length of a roll pin and drive it into the gearbox. The drill bit was a perfect light press fit in our situation, but you may have to dab a bit of epoxy to keep yours from coming loose. Those drill bits made it through Championships and IRI and are still working just fine with the transmission auto shifting at 60 psi.