Reviving an old thread...
Working on the doors for a 41 1/2 ton. The original doors for the 41 I have and for a set of doors for parts from a 46 only have the original channel on the sides and not the top.
I have purchased the full channel from Jim Carter PN WI201
Has anyone actually installed the full channel all the way around the windows? It looks like some spacers would be needed for part of the top portion. Ideas?