Well Flisko, no need to break anything, managed to take it all apart and eventually got the motor out, If anybody needs to know how I will take pics tomorrow and post it. The glass unbolts, there isn't any plastic clip, Very hard to get the motor out but it will do eventually.
Next problem.... Motor is working perfectly, it appears that it was just "stuck" Does anybody know what sets the limits for the motor, ie what stops it at the top and bottom,is it just resistance? Cant see any limiter on the winder itself.