[QUOTE=Desertlakesflying;12660300]All my Kingtechs run great at 5000' from the factory. My smallest is a 140, but a couple of guys have smaller and they don't have issues either. <SNIP>
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I fly with a club field elevation of 6950 feet in Colorado. It is dry up here which really helps boost the DA. Having flown a PST 600, JetCentral Super Eagle, Wren MW54 (home built, kit and standard), Wren 160's, MW-44's and now KingTech 45, 80, 85 and 140 in addition to a Merlin 100 - all have operated just fine up until 90* when the DA gets to be about 11,000 feet. The newer KingTechs and Merlin STILL have not missed a beat up to 95* ..... and then I melt. :-)
Several club members have gone with the Swiwin (sp) engines and they seem to perform just as well.
Today's combination of engine and electronics design seem to be fairly bullet proof, so having a dealer (stateside) who can take care of your needs - especially on the weekends when we actually have a chance to fly is a tremendously valuable variable.
Greg