That's brilliant thanks. Does the motor on yours realy make a lot of difference? can't remember the spec on yours without looking through lots of pages.
Have got the 12mm hub conversion and got a couple of 2mm drill bits to modify the standard shaft.
Will let you know how it goes. Only thing I don't like so far is that the bolt doesn't tighten the 12mm conversion nut very tight.
I surpose that the original plastic one just sat there on the pin so shouldn't make any difference.