will do mate, thanks for the advice, i'm gonna put together a leak down testing kit too to see how the various seals are performing. It was all brand new genuine Honda seals, crank etc when it was put back together a couple of years ago so i was thinking surely it can't be knackered already, my Dad's GT750 had been stored for longer before he bought it and its got a heavier crank and that was fine.
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After years of moaning about immigrants now i am one...