We took it to Holt Cat in Edinburg to find the reason for the sputter at 65 mph. They rose to the challenge. They found a bad fuel regulator, a loose grounding cable, a bad fuel check valve, and a cut wire in the wiring harness. Maybe only one of those was causing our problem, but of course they fixed everything. I took it for a test drive. It felt pretty good. I think they got it. It’s a short drive from the repair shop back to our place at Sandpipers, so we haven’t had it on an extended trip yet, but this is promising. They spent a lot of time chasing our problem, so it wasn’t cheap, but I know they gave us a break on the hours too. They were determined to make it run right and I think they did. A real road trip is the only way to be completely sure, but we’ve been a little too involved in other stuff to accomplish that yet. Maybe in a week or two.