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Hi Maz, not sure hom much was machined off, I'll find out this week, a bit risky skimming the barrel in case it nicks the coating in the barrel. Planing to do away with the thermostat and getting it looked at on a dyno in case it's running lean at the high end of the revs. Last resort is to...

Hi all, running a 2014 390 as a race/track bike only and having head gasket problems, just had the head machined due to normal warp issues with early models. Just been to a track day and the head went again in the last session, no noticeable overheating issues after doing cooling mods, ( better...