Yep, Paddocks quoted me £95 delivery for 4 tyres

+1, perfectly safe to do.

I have an ex mil 2.5 NA 90 and only got a foot throttle. If you still want a photo I shoot one tomorrow.

A simple plodding work horse. Stick with it, unless you want to be doughnutting

Had the same feeling on my 1991 90 plus I could smell the drum getting hot. A couple of hours to strip, clean & rebuild. Mine was old solidified grease in the expander had glued the pistons and not allowing it to release. Good as new now

Really depends on its history, same as any wagon/engine. Very basic plodding engine that with regular servicing just keeps on going. I have a 1991 n/a 90 that hasn’t given a problem for the last 6 years that I’ve had it. Suits me and I have no intention of changing the engine.