Cheers again all,

When I bought the bike it was running mineral based oil and had the wrong spark plugs and also had a galvanized plate head gasket with no holes for water flow. I found out the wrong plugs were being used after the seizure. The top cylinder was running lean which was the main cause ( and probably a blocked oil tube). What little spark plug that was left was white. The bottom looks perfect, even the piston looked good for 30,000 k's.

I might rip all the oil injection out and run pre-mix.


Cheers again.