Hi All, There is a loco on e-bay item number 6029141731 that has got me puzzled. It is described as a 5" loco and has a wheel formation of 4-6-4 so it must be a tank. The piece of copper tube for the boiler is about 4 feet long but what has got me really puzzled is the firebox area where it seems to have two what look like vertical blast tubes or something. Anybody got any ideas. Puzzled Regards Clif MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.