CP, Have you tried your motors lifted one hole up?
What is your speed at 4,000 rpm? How about fuel burn at that speed?
I had a chance to open mine up a bit on Tuesday. I was hitting 45mph at 6,000 rpm (p) 6,100 rpm (s).
I am at 28 - 29mph at 4,400rpm - just at 2.0mpg
I would rather see 30...