Last week I was finally able to get a hold of a Bally Astrocade and about half a dozen games. I have a couple of minor issues with the machine at present:

1. I got four controllers with the machine. One feels pretty good, but the other three are all experiencing varying degrees of stiffness with the analog control, but the triggers and sticks all seem fine. Does anyone have experience or tips on how to loosen up the analog? Is it just a matter of cleaning the insides with a solvent a la Atari 2600 paddles?

2. I've also noticed where the console seems to crash (meaning that the graphics get funny and the game freezes up) if it's slightly bumped. Is this a common problem or is there something I need to look for inside the machine like loose chips, etc?