I just saw you post about the running of the locomotive. I have just mounted the wheels and rods, etc on the Br-18. I found that running the locomotive (by hand-I'm not motorizing it), it started out OK, but about a half turn after I started to move it it became stuck. I checked all the clearances, connections, etc. and it all seemed fine. At one point I even thought that it was being stopped by the rods inside the steam cylinders being too long and hitting the front wall. But then when I moved it and helped the 3rd wheel by moving it by hand, it worked fine. it seems that the lever connecting the 2nd and 3rd wheel is creating stopping the motion. Could it be that the problem is the rod connecting the 2nd and 3rd wheel? Similar to your situation?