Here's the 4MT running in tandem on my brother's layout with his DJB version. It looks like the MOK needs a little more sideplay on the bogie for his curves, so I'll have a look and see what's possible.
And a comparison image, MOK 80044 vs DJB 80118 . I think the DJB version (originally mine and built by me) stands up pretty well next to number 44 made from the more sophisticated MOK kit.
Cheers,
Peter