Aye Leonard,
Thank you for your quick reply. I am sorry to read of your two family bereavments and well aware of the resulting glut of formalities to be completed in triplicate.
Having spoken with Tony today, it wasn't until he had done some research before your arrival that he thought polarity might be an issue. He saw my components in September 2022. Then, had been in dock for a quadruple by-pass from February 2023 until the end of March 2023. He is still on "light duties"! I didn't have my stator plate rewound. But, replaced my CDI power coil, with an aftermarket "Lambretta" item, probably Indian in origin. I did re-connect the replacement coil to the CDI wires to the same terminals as those originally used. BUT ......! Didn't check the coil polarity and in my defence, I haven't a clue about electrickery and don't understand how a negative pulse signal, before a positive pulse signal can be generated from a coil, or how that affects the CDI circuitry. Very much "Smoke and Mirrors", as I am wired for objective and not algebraic theorising.
I am despatching my stator and associated bits off to Tony tomorrow for re-assessment on his rig and oscilloscope to see if I too have a polarity problem.
Again, my thanks for posting your outcomes and I hope that you enjoy running the wee beastie. The Minx always ticked over no problem, maybe a bit fast when compared with a long stroke single, but a steady 1,100 - 1,200rpm was no problem. Also yours being newly rebuilt, will need at least a 1,000 miles to bed in and free off, so I wouldn't worry too much at present. Just make sure to change the oil after 100 miles at most and then again after 500 miles, before using your preferred oil and changing every 1,500 miles. Nora Battie's stocking in the sump doesn't filter much!
Good health, BillR