Made it 95 miles since I started the motor. The only thing "new" on the motor are the gaskets and the heads. Today it was running fine, then suddenly as I turned a corner into a parking lot, the entire sound of the motor changed. I got it home and found two broken valve springs on the drivers side, #1 and #3 exhaust. I'm due to be back in Ione, 85 miles away tonight after work, and tomorrow be another 100 mile drive away in Moyie Springs, Idaho in this truck. I have a feeling this will be a long night.