On 26 Jan 2006 14:14:53 -0800, John Martin wrote:

Line up the wheels. Make sure they are in the same plane.

Crown the tires.

Install a blade with a good weld.

Back off the guides and adjust the wheel tracking so the blade tracks
on the wheel crowns. Adjust the guides.

John Martin

Thanks for the replies, what do you mean by "crown the tires" please? The
wheels are flat on the blade running surface and seem to have glued on
abrasive coating, not something that looks to be (easily or cost
effectively) renewable. Cheers.