[Adam]

I had reconsidered just fixing the other chassis, but when I saw it was full of wire with that bad rubber insulation, I went ahead with my plan to swap the tuners. I got the holes in the right place and mounter the tuner so everything fit, but I hit the oscillator coil with the drill.

So I took the one off of the other chassis (the coil and the circuit seemed more or less the same). After I got everything back together the oscillator would just stop running after it got over about 1350KC (the oscillator frequency, not what the tuner was set to). I tried hooking it up in both directions (I've seen this make a difference before), but the other way it wouldn't oscillate at all. After trying lots of different stuff, I noticed that if I touched one contact on the coil it started working. Hooking it up to a test lead that went to nothing would also work. And so did a small capacitor going to ground, I wound up leaving a 10pf cap in there, and it works like it should now.

After I got it working I went looking for a schematic. The schematic didn't show the exact circuit that was in either radio. I drew on it to show the circuit that is in the radio now. Those capacitors I X'ed out were not originally in either set I have, and in both sets that one end of the coil was tied directly to ground. That adjustable capacitor I drew in was originally in the chassis I used, but not the other. It lets you adjust the frequency of the oscillator. I also drew in the 10pf capacitor I needed to add to get the oscillator running.