Got it! After new rollers, bearings, CDI, belt and other stuff the problem with the slow acceleration most recently was not having the airbox connected. Just doesn't get proper pressure to the engine. It's running better than ever. Hopefully I can leave the plastic attached for a few months now. What a nightmare this has been but I've learned a lot about this scoot and the next issue will hopefully be resolved much quicker.
“A gentleman is someone who can play the accordion, but doesn't.”
― Tom Waits