There' a couple that I can think of: The KU65 and the S06P from BMSBattery. If you want, I'll have a look at your controller and test it on one of my motors. The various measurement results that you've given don't make sense at all, so it could be a mistake in your wiring. Ideally, I need the LCD as well, but depending on its connector, I might be able to use one of mine.It'll cost a couple of quid each way to send your controller to me.