I've installed an MSD box in my IT7 and I'm having some issues. Hoping some one can help me troubleshoot.

Setup:

Leading-
Single MSD6A
triggered off the leading mag pickup
Using the MSD supplied trigger twisted pair wire
MSD output going to an MSD blaster2 which goes to the distriubtor cap "L" input
locked distributor

Trailing-
Stock except for a blaster 2 coil

The problem:
Car rev's sluggishly - definitely down on power. Really runs like crap if I disconnect the trailing, but it will still run. It sounds like there's arcing at or inside the distributor. I get a strobe with my timing gun on the leading, but it's sort of "always on" - I never see the timing marks on the pulley. Trailing timing looks fine.

What I've tried:
Trigger wires are very well separated from any other electrical
Ignition wires are well spaced
If I go back to stock, the car runs great, and the timing looks fine
Rotor cap and button are fresh and clean

Questions:
Can you time an MSD6A with an inductive pickup timing gun? Or does that multiple spark stuff mess things up?
The MSD instructions say that you may need to drill holes in the disty cap due to air ionization. I pulled the blank plug off the cap - no effect. Anybody else had to do this?
I guess my next move is to trigger off the ignitor output and see what that does.
Any other suggestions?

Help!!
Neil Gueldner
N Car region