Hi Jazz, I was very pleased to see to progress you've made on your Chowbent 2-6-4T as I built one some 10 yrs ago. I don't remember finding any problems with the body although I'm still not sure i got the flare on the bunker sides right for 42626 but I did have to scratch built new (larger) bunker tank vents. The notes I made at the time show many mods to the chassis particularly the cylinders and motion - maybe you've not got that far yet. On my kit the slots in the frames for the motion bracket set the cylinders/slide bar asembly at way too steep an angle. In the end I re-cut the slots and made the cylinders/motion as a bolt on sub-assembly. I admit I did't notice the cylinders were too far forward but I did find that the slidebars were too far apart as designed and it was quite a lot of work to get it right. I found that, contrary to instruction C27, the missing valve rods/buckles were noticeable and new holes were needed in the combination lever. If I was doing another I would certainly spring or compensate the chassis as I found the long wheelbase a bit rigid where there was any twist in the track. I'll get the loco out and see how I secured the body to the chassis. I'd be happy to pass on any notes if they help. Best of luck with your loco - a most under-represented class. Cheers, Ray.