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I was able to jury rig a tall octal tube shield by cutting it down so that it was the appropriate height and it still seems to be having issues with motorboating when a signal is applied to it with my signal generator, it basically just hums like mad when a signal is fed through the radio, either through the grid of the 6A8 tube or through the antenna wires, and the hum goes away when you tune away from the signal, and also the hum gets louder or softer depending on how you adjust the gridcaps on the 6K7 and 6J7 tubes, any ideas as to what might be going on here?
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