[R-390] Newb question, slugs

[Jason W6IEE]

Hi,

I have recently acquired a bit of a beater (yet operational) R390A, and
have so far replaced C553, C559, and that leaky cap in the AF section.
About to re-stuff the filter caps.

My receiver was stored in a rather "porous" shed in the desert, probably
wrapped with (some) plastic for umpteen years. It's just a little dusty,
and a lot better than expected under the circumstances.

Understandably, the grease in the gears has hardened into nothing, and
there was a definite metal on metal sound and feel. This evening I started
applying what I call "Groil" ( somewhat equal parts red light weight wheel
bearing grease, non-detergent 30 weight, and Marvel Mystery Oil.) to the
gears and cams, and have seemed to have everything smoothed up
considerably. (with much application still yet to do.)


However, I noticed that one of the slugs in the back is... in my best
attempt to describe this, Offset from its adjusting screw. And flexing,
when that slug rack moves. (I can shoot a little video of this, if that
would help.)

 Is there a section of "piano wire" in between the slug and it's adjusting
screw? Are they really supposed to deflect? Or is this thing just threaded
brass, which is fatigued and about to snap?

Thanks,
Jason W6IEE

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