1949 GMC FC101

With the door relays in place when I try to put the inner door cover panels in place there is interference with the panel and relay. In the factory assembly book there appears to be some type of space attached to the door just above the relay and 2 more along the path that the linkage travels to the door latch. They are labeled #3690230. Does anyone know anything about these. I made wood panels out of a 3/16 thick vineer plywood and when I go to put them on they must bend around the relay and linkage and bind.

Anyone make there own panels? How did you get around this issue?