Most of the lamp holder's insulating components are trash and these lamps are a bit hard to get to so I decided to come up with a LED solution. All the tuning chassis have been taken apart to clean so one of the rivets were removed. This gave a good mounting screw location to mount the LED boards. Just need to drill and tap for a #8-32 screw. On radios that do not have this rivet removed a clip could be made to hold the LED boards, maybe even using the clips from the lamp holders.
Just did a test fit and the above design did not fit so I went back to the drawing board for a modified layout:
One more try:
Thought I was done but one more try is needed: