okay, from a stupid move on my part, I was adjusting the timing and was turning the distributor with the tfi module, I had the nut still too tight and I cracked the tfi module. This was on a MSD Pro Billet Distribuor. the car didn't start anymore, so I put the stock tfi module on the msd dizzy and it works. My question is.. am I loosing any performance with the stock tfi module over the MSD one that came on the MSD unit? is the dizzy basically useless now? thanks-Mike