I'm new to the Forum. I have a 'small' problem. I have a number of older models by Roco and I want to dismantle them for repairs and upgrade BUT I cannot for the life of me see how to separate the boiler(s) from the chassis! There doesn't seem to be any visible screws, catches or clips. The Locos are Br 44's & 50's. I don't want to 'butcher' the locos cos I want to re-assemble them after upgrading. So, can anyone advise me on this, please? Thanx in advance.