hi mate the info you have is cool and very useful cheers. the problem is that every time i have checked the shells they are perfect i mean there are no score lines or any exessive rubbing marks but when i get my block boared i will get him to check the crank and regrind if needed the only other problem is the bloke who does it for me is 150 miles away but hes really good so ill shut up and travel.spare block is stripped and im half way there on the lump in the car ill keep you posted she should be alive again in about two weeks or so