Hi, I bought two Hornby 31's.
R2963, 31439 'North Yorkshire Moors Railway' in Regional Railways livery.
R2900XX, 31247 in Railfreight grey with yellow ends, with Hornby sound.
I don't think either of them has the suspect chassis, but would appreciate confirmation or otherwise?
I actually bought 31439 with the intention of fitting DCC sound to it. However, I found a new sound fitted 31247 at pretty much the same price as buying a sound chip and having fitted, so I bought it and swapped the bodies over - not quite a 5 minute job as there are differences in the lighting.
So I have the R2963 chassis (only test run) fitted with the 31247 body which I don't need. So if anyone wants the loco please contact me via a PM. I'm happy to split the chassis and body if it helps anyone solve their 31 problem.