drained all the gas from floor tank, changed plugs and did a de-carb, checked fire w/ inline tester, cleaned carbs and got new gas, only 3 gal. in 6 gal. tank. did not have time to run on the step, but did back in at landing and nosed against the dock and opened her up. held 4200 r.p.m for 10 min. is this ok? seems to running ok.