GM FT B Boiler Re-Skin Question

No one seems to have mentioned this, at least that I can find, but when I install Mike's GM FT Demo re-skins for the full Britkits FT xtra pack I cannot make the B boiler unit appear as the demo, only as Jim's original Family Lines. The other B and both As look right. I've clearly missed something as all his other re-skins work properly, so I'm mystified. Can anyone point me in the right direction?
V/R,
DC
V/R,
DC