Hi Llew,

Following on from what sb30inch has previously written,

IMHO there's not much to do with a rear roller. If it was working well with no issues I'd pretty much leave it alone.

I would check out the main bearings on each side to see if there's any play what so ever and if so I'd replace those as that will create uneven cutting issues, but apart from that just clean the outside and re-install it.

Cheers,
BB.

I live a 24 Hour lifestyle, but every now and again I seem to fall asleep, well at least that's what my wife tells me.