Thank you for the tip on acidic cleaners. Don't feel bad, I can one up you. Years back I put a disassembled carb in a tub of straight simple green. I got sidetracked and left it in overnight. Pretty much ruined the carb. Fortunately it was my buddies kids TTR90 so easy and cheap to replace.
I really want to like these over buying a second pipe, just not sure I can bring myself to cut up the very nice factory slip on vs. just throwing on a FMF TurbineCore when I need it.
I've plugged my screen type spark arrestor too many times... its really just my lack of maintenance but still another thing to mess with. They don't seem to make these for my 17 250xc bummer
