Well I am back with the latest report on my engine have been trying other props needle adjustment and putting some time on a old Seagull Super Star the engine performs okay in the air there still is a problem with throttle chop engine drops so low that wants to quit then comes back to what I think is a fast idle 2000 that's as slow it will run smoothly and reliably. Still requires a starter to get carb wet then will hand start 3-4 flips. I have since sold all my other CRRC engines and on Ebay about half of what I paid for them. Now using a DLE 35ra with the Boman ring flat reed cage work starts on one to two flips and Tower warranty. Hope all will follow my lead and insist on quality or as close to it I am sorry for my experience and will never purchase one of the engines ever again!