It has been a long since anyone has provided an update here.
My Current scooter continues to provide daily transportation. My main gripe is the the Kelly controller. As with the previous Kelly controller it replaced, the new controller has developed a condition whereby, when applying regen braking, it goes into rapid momentary cutouts producing a harsh "bonka-bonka-bonka-bonka" that varies with regen current. The problem seem to occur at a certain temperature range depending on ambient temperature and how hard the scooter is ridden.
I'd disable the regen, but the Chinese brakes are not entirely confidence inspiring - they pulsate annoyingly (pulsation in the deceleration, not brake levers) as if the discs are warped or of uneven thickness. This is with new discs which replaced old discs that did the same thing. The replacements fixed the problem for a while, then started doing the same thing. The problem seem to be not warpage but the metal is of varying hardness/coefficient of friction around the circumference.
And I'm on my third speedometer - but at least the replacements have been provided by Current free of charge.
At least Chinese parts are consistent in their defects.
And I'm still fighting to get a wiring diagram for the scooter - management is balking becasue they want to consider it a "trade secret", which is absurd - especially in light of the owner being entirely on their own as far as repairs and maintenance.
But neither of these problems is serious enough to keep it in the garage and the scooter continues to run reliably with about 14,000 miles/ 23,000 km on it.
I adapted a J1772 charging receptacle to the scooter so I can now charge it at public EVSE's, which along with four-wheel EV's, are finally starting to be seen in my rust-belt city. It's easy. Just a 887(1%) or 910(5%) ohm resistor and diode between the CP pin and EVSE ground is all that is need to signal "feed me" to the EVSE.
A picture of the installation is here - the yellow thing is a dummy safety plug to cover the 120 volt male charging receptacle whose prongs are energized if the J1772 receptacle is being used:
I'd love to hear how other people's CuMoCo scooters are treating them.