Dang! I don't have a Spectrum MX model (or an FX) and yeah it will need a little TLC to get her back in fighting form but it will be worth it.
Good luck trying to find original SwitchMaster knobs though

I loves me some Speccy's
And that Avenger is in beautiful shape eh? Original case too! The handles have a weak spot there at that weird angle and the plastic fails. Easily replaced with something more flexible like a leather version.
My X77-T had a lot of body dings, and the previous owner was playing it lefty and had added position markers on the opposite side of the fret board, badly I might add. The neck was perfect though, thank goodness.
This is a straight ahead rock n roll beast! Someone grab that bad boy!