Update: I've received good clear photos of the roller pairs, from which I can work out a sufficiently accurate diameter for the pinch roller. Thanks David and Ed.
My guess of 27.5 WAS quite a bit off. Preliminary working from the photo gives a roller Dia of 27.2 mm, ie only just touching. But that was done late at night, and from only one measurement. I'll post a more detailed result later today. Guy
