[cloves]

ok..i have an old kraken that keeps crapping out on me. Every time I open the mechbox it would appear that the trigger contacts are burnt and black. I scuff them up with a ScotchBrite pad so they are shiny again, and the gun works like a charm.
So the first question is, why does this keep happening? I thought maybe it was a problem with all of the grease/lube in the box getting into the trigger assembly, but the gears have been essentially degreased and relubed very sparingly.
Second queston is...where can one buy a new trigger assembly? Specifically those contacts? I've looked on a few retail sites and can find lots of complete mechboxes...and shells...but the stuff inside.....i see gears,springs, cylinders etc etc etc...but not those contacts.