Mike, I had the same with Preston denying the new chairs have problemsPreston emailed me today to say they have no idea when they will have any stock of chairs or parts for chairs. Not good. They also deny there are any major issues with which you and I would disagree. I too have bought a new chair( A JRC Stealth) and a barrow as otherwise I could be waiting forever. I have adapted my accessories to fit. It's annoying though.
Farmers beside the river Witham in the old days would sometimes be waiting at the station for the "anglers specials" trains from Sheffield of a weekend as they had arranged for some small engineering job or welding to be done by some angler or other in one of the local steelworks.Once of a day I could have taken these to a local engineering firm and they would have copied these in steel, now sadly gone, I don’t know of any small engineering firms local, that would do this now.