Originally Posted by bmwhacker
Thanks for the input.
Today I did loosen the cylinder base nuts a half inch or so with the hope that the pistons were on an outward stroke, which would have moved the jugs outward. Unfortunately I didn't gain anything when I rocked the rear wheel (hoping to move something).
I realised on my way to work this morning that if the the big ends share the same journal the one would be on it's way in while the other is on it's way out, so the inward bound piston will draw the cylinder onto the crank case effectively jamming the whole lot in any case.
Heating with a heat gun is an option, but I would imagine that the rings stuck to the cylinder wall would simply follow it out without letting go. No harm in trying. Heat gun is the way to go.