I have a 20-2432-1 UP Centennial - double diesel that I took the shell off this AM to fix the smoke units [ the wicks were pinched on the side of the resistors so I centered them ] and replaced the traction tire which came off at the Maker's Fair show at the Henry Ford Museum this last weekend. The BIG question is where do the 2 small "C" shaped rubber pieces go - besides falling out on the work bench??? The MTH web site does not have a parts diagram for this engine. Thanks Bruce
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