My T3 has the 2ltr air cooled EFI motor. It has a oil leak that I think I have traced to where the head seats onto the barrel. I am wondering if anyone has re-tensioned the heads whilst the motor is in place and if this caused any problems. There is probably something more serious that head tension but I am wondering if it is worth a try. I cannot see anywhere else it may be coming from, I have replaced the push rod tube seals and rocker cover gaskets, I put the vehicle up on ramps, removed the lower heat shields and when running I can see what looks like movement or tiny little bubbles in the oil sitting between the head and barrel. Is it worth trying?