OK. I have 3 Bachmann Shays. 35, 38 and 55 tonners. I am trying to change out the coal load for an Oil Bunker on the 35 ton one. How in **** do you take the tender shell off? I have tried every screw on the bottom of the thing and the tender stays where it is! If someone can tell me how to get the sucker off, pleas let me know! Thanks.