TK70 sticky unload button?

[Kyle Owen]

I fixed the button (replaced it with a standard push button), but it still
doesn't want to eject my TK50 tape I put in. Blinks all three LEDs. It
looks relatively dust-free inside. I may can get some canned air and blow
it out better, but besides that, is there any more debugging I can do, even
from the >>> prompt or VMS? I can get a video showing the tape motion.
Seems to load without issue, but it doesn't really start winding back upon
pressing the unload button.

Thanks,

Kyle