The plugs definitely were not loose. I know the spark plug gap is .040 and I think the MSD wants me to go bigger but I don't think so. Timing is down to 32 all in and that's what I believe the problem is. I'd like to turn back up a couple degrees and go for a drive and see what happens. Besides the plugs that's the only thing I changed and my driving habit I guess of holding it at three grand for more than a half hour. AF 14.2 @ 2800rpm....