As Jimmy said, it may well be the diff that is too slack. You should tighten the spring right up on the slipper, then hold the right rear wheel and spur gear with one hand and try to turn the left rear wheel with your other. It should be very difficult to move. If it moves too easily, the diff is too slack and requires tightening.
If you can bring it to Batley on Sunday, i'm sure some kind soul will have a look at it for you and advise what to do.
Darryl, can you remember when i told you to have a good long break before you came back - so I might be able to beat you? You've come back about 5 years too soon

ops: :roll:
Chris