Running good now but a little nervous to really romp on it with the 440rockers. Lots of bad reviews on them. It's only a 6000 rpm build so hopefully they won't explode like I've heard they have done for others.
Most of the complaints I've heard about the 440 Source heads were concerning the keepers on the valves. From what I've read you really need a competent person setting them up to make sure they're right. I think I'd ask the shop that repaired your problems to check them out for you.
