Thanks for the reply. Don't have much experience with the procom unit at this point. It was a test at the shop. With my stock CDI in, the bike used to always start with choke (enricher) on and idle at 2K - would take throttle - I could ride pretty quickly even at 40 deg F ambient. Then one day, literally overnight, it would not take the choke, but with moderate ambient temps (50+) she would start w/o choke, would not take throttle well, but I could let it idle for 5 mins or more, then ride off. Mostly would ride well except it would cut out at lower RPM sometimes cruising along. Then starting became a chore and 1 cyl would not fire. Took it to shop. Shop determined it was CDI, tried the procom. It would not start with choke, but would w/o choke, does not take throttle for a few minutes, then seems fine. Trying to fix cold start, the shop also upjetted, cleaned some carbon out of one carb (presumably from the poor starting/ running) and re-set the idle mixture.
I was worried that CDI may not be bad after all, so I tried swapping units back and forth. One telling difference; holding RPM at 3K (not riding), the bike would hold steady with the procom, but would rise to 3500 -4K and then drop and repeat with my stock CDI. Also - with both units during that test, for some reason it just backfired and died. Maybe that was due to fouling when it was running crappy on the stock CDI?

So, I'm pretty sure the CDI is bad but I would have thought the Procom would fix it 100%. Normally, I'd be assuming that the CDI is not the whole problem, but I've read here that others have had cold start issues with the procom.

Maybe I was just really lucky that I never had to wait very long to ride off (with choke on. The bikes do run lean from the factory, and prior to this I had stock jets, so maybe the choke fattened things up to a better mixture whereas now it's fat with the new jets? I just think it's wierd that the bike now STILL won't start with the choke on. Before this problem arose, I would literally have to use the choke EVERY TIME if the bike was shut off for even a few minutes. Maybe she was just very lean before??

Thanks for listening!