ATC70 cdi conversion from ebay problems

[uhlhazard]

I bought my conversion about 5 years ago. Ran awesome. Sold the bike to a friend. Last month I bought the bike back, no spark.

Wiggled the ground wire and it sparked. Cranked it up and it ran terrible, sounded like detonation or something just terribly out of time. required half throttle to idle. WOT towards the top of the rev limit it ran absolutely fantastic tons of power but soon as rpms dropped it was back to crap and sputtering.
Contacted the seller on ebay and he sold me a cdi after some troubleshooting steps.
Installed the new cdi and bike ran exactly the same. Reinstalled the original points/condenser setup and it ran perfect.
Installed the cdi conversion on my wifes Christmas special atc70 and it ran exactly the same as mine. Terribly.
Contacted seller who recommended the other half of the conversion (the coil piece under the flywheel). Replaced that and made no difference.
Debated throwing tools and burning everything to the ground.
removed the lighting coil thinking it could be somehow interfering. It wasn't. No change.
Moved cdi setup back to wifes 70 (minus the lighting coil) and still ran terribly.

I'm nearly out of ideas. I tried several different used but good spark plugs which made no difference. Wondering if the plug gap is the issue or something. Thinking the cdi conversion requires a different gap than stock.
Tomorrow I'm going to buy some new ngk plugs and see if that makes a difference.

[86125m]

Does the cdi conversion require a differnt timing set up. But personally i think i would just go back to the points. My moto is if it aint broke dont fix it.