I'm
really impressed by your Mica work Cameron. The additional detail that you have applied has been well worth the effort and they'll outshine mine. That said, mine were intended as quickies and intentionally not built to the standard you have applied.
Re. the Siphon F. Those old K's kits can be made up quite satisfactorily. The roof radius was not a problem on all of mine [I've made 5 and have one left somewhere to construct] but it did cause problems on some. I ended up packing the gaps with thin micro-strip and flooding it with liquid poly.
I have used those MJT CCT units on a couple of coach conversions. They are extremely useful and result in fine running. Being compensated, I find the finished models easier to rail by using a railing ramp however as, inevitably, one axle or another drops out of line!
How do you plan to detail the Siphon underframe? The parts supplied by K's are absolutely hopeless and need binning. If you intend to detail that area more accurately, PM me your e-mail address and I will look for photos in the Siphon book. There's not a lot there though, underframes were so often ignored.....
I can't remember if I have posted these already but, if not, here are my most recent Siphon F builds:
Tony