Thanks for the input folks .
But this drive cost me nearly £200 inc vat and carriage , and is still in warranty so I am still hoping they will look at it .
In tests today 9.3v analog input gave me about 50 v output and spindle speed of 2200revs , but still gutless .
Am thinking these numbers dont tie up!

Occasionally I feel it is improving but no more than a feeling. (brushes must be run in by now) .
Cant harass them until next week now though.