The wife and I went out for a cruise today. Not 10 minutes out the engine started popping and I was down on power. I limped home as it was not to far away. There was a lot of noise out of the drivers side valve train. I pulled the valve cover and found a roller rocker sideways, a bent push rod and a worn rod guide. These are Crane roller rockers on a Magnum head. I think the guide wore out allowing the rocker to get sideways enough to fall off of the valve stem and then the push rod bent. The stem does show a few marks. Now I have to find some replacement parts. Here are a couple of pics. One pic shows my new pretzel and the other shows the rocker. It is hard to see but the damage on the rocker is on the lower side and it nicked the roller.
Jack
Jack