I have been reading everything I can on the 340 valve train and just read that the 340 rockers were different than the 318 rockers. Apparently they have a relief area for bigger valve springs. I didn't realize they were different. I used a set of 318 rockers! Haven't been able to go out and confirm this is my problem but can anyone confirm if this is truly the case? Were the rockers different? Could this be the cause of my noise?

That's King Weenie to you!