richen that baby up a deadstick means it went lean and ran out of gas. Re-turn that high for max rpm (start this over) and then richen that low up and fly it. if it burgles alot while flying start leaning that low end out in small moves about the size of a screwdriver blade at a time. any time u turn the low in about 2-4 blades recheck the high as it may need a slight richen after 2-4 blades of leaning the low.