The GC and Met in OO

I remember converting a rake of these to an earlier GWR diagram.  I pre-cut all the plasticard strips I needed and placed them as kits of parts in the compartments of an ice tray.  It made it much easier to do the conversions on a 'production line' basis.

That's kind of the idea I'm toying with for the other five vans in the rake.  I'm doing this one on a piecemeal basis to fully prove my method; I'm fairly confident it works having tried it out on a scrap body, so this is the proving run before fully committing myself. 

Nice work. Got to agree with you, getting a model square is the key. My theory is that it tricks the mind into thinking that everything else is right too!