I have the MSD crank trigger. MSD lies when they say it can't be false triggered. I had nothing but problems and was a waste of 300 dollars.
MSD sells an adjustable race rotor for small diameter distributor. P/n 84211. I put that on, phased it, and all my problemms went away. Should have just done that in the first place. :|
Someone else on here had the same problem a couple years ago. Never did say what he did to fix it.
Good luck.