I dont want to jinx it. You guys have any problems with your 390's, I ve had mine a year the only problem I have is I dont ride it enough. I was thinking about ceramic coating the pipe section that goes under the seat to keep the heat out of there.
Neither of us have had a single problem. My buddy is an A rider and races, and I'm a casual rider and beat the crap out of it. Never so much as a hiccup.