Hi Al,
You didn't mention how fast you're spinning the blower (how much boost?), compression ratio or what you're burning (just methanol?). I think you're probably just drowning it with fuel. Systems typically go rich at the top end. What bypass pill(s) are you running?
I assume from your description you're running a Pro-Mag 20? If you're drowning it, no amount of mag will help. If your spark plugs aren't showing any heat yet, then I think you need to lean it a bit until it stops dropping cylinders.
Spud