Not sure what else can be said of the Kingtech products if you review this K-80 thread and the K-140 thread elsewhere on RCU. Owners are reporting great power, superb reliability and great service from Barry. I have the K-140G, have ran it not flown it yet. Have the K-80F (kero start - why would you get the K-80E?) and have about 30 flights on it now at 6500' MSL with no issues. I may try to tweak it a bit next summer to improve the starts (cut down on flames on start), but other than that, just put kero or diesel in and go fly.
Regards,
Gus