Hi. Sorry I haven't posted in a while. On Saturday I went to the Train Expo in Monroeville and bought an engine that I need some help with. It is a BR maroon City of London duchess class locomotive by Wrenn. When I bought it and took it to the test track it didn't want to go. The guy said it just needed cleaning. So I took it to a model shop who serviced it for me. When I tried it at home it still didn't want to move. I tried oiling the joints-still nothing. You can here that it wants to move and when you look at the motor you can see that it is trying to move but its like something is jamming it. So I was wondering 2 things. 1. Can anybody help me with this problem 2. Can anybody help me determine its value. Thanks.