Dave were at squires this weekend,[ fizzy run ].. that r/h crank seal " my H2 had a fooked r/h. it smoked like hell on the top pipe, . even when hot, [ other 2 clean], anyway I fouled the plug on that pot, . running slow behind other bikes on run, ,it never blew into oil, it just sucked into crankcase, , Up the pilot dave, andclose the airscrew a bit, , it should smooth it out,