What color is the sticker on the msd box? Gold or silver background? The first boxes MSD had you set the static timing 5 degree's more than you wanted to run...(silver I believe) and the gold ones you set to what you wanted to run. I would never run them anymore as most of the early boxes that used plug-in chips didn't do what the chip said it would do...so when you didn't get the right curves it would burn up my pistons in my maxed out race motors!
Get a real digital ignition, (new MSD-TL) if you want to play hard with TL systems.