Okay, I've checked my cables and it's fine. I've boiled it down to the pots on the chassis itself. I might have to reflow solder to the joints on those. In the case that they are bad, are they 15k ohm pots? If I need to replace them, I want to make sure I'm getting the right ones.
also the vertical position is off and eventually goes to the right place. After adjusting the horizontal pots on the chassis, I haven't seen the horizontal stretch issue happen again. I adjusted the vertical pot as well so that even when it's messed up now, it's not quite as noticeable. It's just slightly high. I might just get replacement pots and replace them.