Gun Traking
The pots are dirty. They are a bit costly to replace. I have removed them from the guns. There are 2 pots per gun. One for the X and one for the Y. If you only want to clean them you can do one of two things.
1: very carefully bend the tabs that hold the pot together and pry up one side, just enough to spray some cleaner into the pot, then rotate the shaft back and for rapidly. Treat the pry up like as if you were going to take apart a watch and if you bent the cover out to far all of the springs and gears would go shooting out.
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2: I tryed this with mY T2. Pull the pots from the guns and place them in a small cup of alcohol for a bit then rotate the pots to clean them followed up by hitting them with some compressed air. Letting them dry and then reinstalling them.
3:Or you can spend anywere from $10ea on up for new pots. Some reasearch should give you the right ohms along with the right shaft size and shape you will need. Digi key should have them instock.
RJ