RCA 8" portable KCS-100 screwed!

[kx250rider]

Well now I've seen it all! I picked up this little RCA 8" portable with KCS-100D a month or 2 ago, and finally got around to fooling with it. I noticed that it had a wrong aftermarket back-of-set antenna installed. Those sets normally are close to working, so I opened it up and prepared to variac it. But I noticed a lot of white corrosion when I took out the top Left screw that was holding the antenna on. The pictures tell all..... Now we've all at one time in TV repair careers driven a screw through a PC board, but this takes the cake!

I removed the can from the circuit but left it in place, and installed tubulars to replace it. Works now, but still has the usual slightly out-of-tune horizontal oscillator. (Breaks up and motorboats just before locking in). I remember a tuning capacitor across the oscillator transformer causing that in RCAs, but this one is a different circuit with 2 separate coils. Any ideas?? No Sams in hand.

And NO, I wasn't the one who put that antenna on there

Charles