ORIGINAL: oldvet70
It should not take 2 or 3 gallons of fuel to properly break in an OS .46. It should take less than a gallon and should be giving you good mileage after just a few tank fulls. Our club was given 2 Nexstars a few years ago and I was the head instructor. I broke in the engines as called for and neither took more than 10 flights, maybe 60-75 oz of fuel. I still think you have a leak or are too rich.
You are probably right about the richness, I have checked the ship over completely after running a tankful on the ground earlier today. I could not find any signs of leakage anywhere in or under the plane.
Thank you Oldvet for taking the time to reply to my thread.
Fly safe!