Ken, we had a similar deal many moons ago with a Joe Hunt modded Vertex mag.... When you gassed it, the disributor shaft would climb up the cam gear and snap the rotor.... It was many years ago, but seems like Loren discovered it while playing with the mag on a distributor machine... Think he added a shim or something.... I could track him down next week and get the exact details if you want....

PS---Don't blame me for not remembering all the details, I was just the driver!!!!! They used to right the instructions on the gauge panel for me-----Turn left, go fast!!!! Only took two season for me to memorize the instructions!!!!!!