Hi Earl,
Yes -I did that, along with the cams, rockers, etc.
I've just been unlucky - but hopefully should get a new engine out of the deal -I'm not interested in repairs!
By the way - my engine has an additional needle valve, which bleeds raw fuel from the carb into the crankcase for "cooling" - but I suspect its more for lubrication. This n/v should be 1/4 tun out - mine arrived at 1/2 turn, so I left it for extra lubrication. The instructions say that any more than that 1/4 turn will cause a power loss (naturally) but there are no dire ewarnings about closing it completely.
I just wonder if YS had had problems in this department - otherwise why supply additional lubrication if its not been proved a necessity?
Stuart