Hello everyone! I just purchased an '06 Moomba Outback DD with 197hrs on it. The previous owner kept it spotless BUT did not handle the basic maintenance. After looking at the corroded stock cap & rotor, I replaced with a new one and MR43LTS to replace the stock 41-993s.

Problem I am having is that it's topping out at 3,800RPM (roughly 38mph). I went ahead and ran some Techron through it and changed the fuel filter...no help.

This is on the stock OJ 13x13 prop. I pulled off the spark arrestor and made sure the throttle body was opening all the way and it is. Temps are about 170 on the gauge and oil pressure is about 70-75psi at 3,000 RPM.

So, what's next?