[R-390] Strange slugs in my RF deck

[Grayson Evans]

I am disassembling/restoring a very early Collins R390A.  My first restore, so going slow.
I am disassembling the RF deck and notice that there are a variety of slug types in the coils.
Some have a small spring attached from the slug to the adjustment screw, some have just a stiff wire between slug and screw, and some have both (a short spring with a wire attached to the slug).  Someone replaced about 5 or 6 of these in the past, the screws holding the adjustment screw triangle plate look like floor sweepings, rusty flat head screws. 
What are the slugs supposed to look like?

The other strange thing is that a few of the replaced slugs seem odd, they are a small diameter rod of metal (half the diameter of regular slug) wrapped in cardboard.  Looks like someone made them in the field.  Anyone seen these?



Grayson
TA2ZGE - Ankara, Turkey
KJ7UM
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