Terminator 2 Gun - Need advice from another owner

[Nipedley]

Hi there, my T2's gun seems to be a bit unresponsive - either that, or it was designed that way.. In the gun calibration screen if you tilt it up/down, the X/Y co-ordinate numbers go up/down in 4's or 5's - and it seems to be that way in the game as well, meaning its rather hard to be anywhere near accurate and the calibration is off too. I just had a look-see into the guns themselves, and I would say if it was not meant to do that, it would be the potentiometers? They look relatively old.. and I've heard that they do eventually go bad? I'd like to know if these would be the problem, and if so, are replacements available?

[Nipedley]

Bumpity bump.. non T2 owners can reply as well btw, if you have any idea about potentiometers, how long they last, problems that can occur, where to buy etc. feel free to reply