For those that are interested I now have a totally manual convertible roof operation, no motors, sensors, fuses, wires, switches etc are involved anymore.
Just good old fashioned effort. But the rear panel and roof are not that heavy and move nicely enough once all motors are taken away.
The only thing I need to do is wait for some stainless steel hardware to be delivered then I will be able to clamp the rear of the hood down when the roof is up, will be a simple bolts and wing nut operation. The bolt will come up through the roof storage panel cover and will be seen when the roof is down, but that could be adjusted and removed if desired.
VERY happy overall though, no more grief or disappointment or getting caught out embarrassingly, or EXPENSE apart from new roof fabric one day