Wanted: Left lower side panel, top rollers for RD4 4G

Thanks to Wally i have three awesome lights to put on my 1937 RD4, and from a side job i have working on a 1940 D4 7J and 1941 D4 i have a generator (for use without battery) and the right side engine panel.

Looking for trhe left side panel and three of the four top idlers for an RD4. Mine uses a total of 4, i have one.

Also i am looking for the wrench you use to vent the fuel pumps. i made my own out of a piece of scrap steel, a nut, and a bolt, but as i am doing more and more work for guys around here i would like to actually get my hands on some of the old caterpillar tools. Any help would be greatly appreciated.