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A lot of people have had trouble with those engines running hot and not been able to get pistons for ages. Coating on the barrel / bore has worn badly on some eg. 25 hours run time. My frame was a walkerjet one model before the one pictured. The guy who bought it from me said it cracked badly by the engine mounting plate. It was fairly powerfull and noisy. Exhaust port studs needed tightening every flight so I guess they were stretching. That figured as I heard another Flt 200 owner was drilling out broken studs. My next engine was a lot better. Simonini 200 spinning a 130 prop. More power and economy and longevity if a tad heavier. IMHO

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