[cmfhsu]

Hi guys, I own a Little Dot 1+ and was just rolling some tubes (gotta love gb408a's). Took all the necessary precautions-grounded myself, turned off for more than 10 minutes... etc. When I turned it on again, I was greeted with tubes that weren't getting any power (or at least I assume, as I didn't get the normal glow) and no audio through my headphones. I turned them off after about 15 seconds, went back in, made sure all my jumper settings were right, and then swapped the tubes from left to right. Magically, they started working again. It could be that the tubes weren't properly seated, but both of them? I'd say that's highly unlikely. Any ideas as to why this would happen?
 
I did find a piece of what looked like paper stuck to one of the ef92 pins, which i removed, but that's not likely to change anything, is it?