I wasn't aware of this issue with the 99 and up mopar distributers, I have one of these distributers with the Mallory style mechanical advance mechanism. I did however take it out in exchange for a curved and phased distributer from don at fbo systems.
I noticed the mechanical advance mechanism is different in don's mopar distributers, it is more like the older stock mopar distributers. I was thinking of sending don my newer mopar distributer with the Mallory mechanical advance set up, to have him curve and phase it, and I was thinking about dropping it in my engine and use don's as a spare, but after reading this I think I will keep don's and use the 99 and up distributer as the back up.