Just for future bud, I've got 2 spare heads there if you are needing one. How were you getting det? Lucky it didn't go bang lol. My mate is going to come over and show me how to lap the valves in as I've never done anything like that before, and agra have already cleaned the valves when the head was being skimmed so that saves a job got valve stem oil seals and nismo valve springs to do aswell even tho I said I wouldn't touch the heads lol