[Jayce]

I'll bet it is alignment or even a tube. Even fully restored radios can sometimes have something get out of sync a short while down the line. It's part of the fun of owning an antique radio and nothing fatal. I had one radio that fouled up a week after my friend rebuilt it for me and we couldn't figure out what was wrong. So, he flipped the chassis back over, moved all the capacitors around a little with his fingers, flipped it back over and it has worked fine ever since then. There were no obvious shorts, but for some reason that little bit of movement on the components cured the issue.