Another stinger with the ST 2500, no problems whatsoever(straight from the box) after 30+ flights in the last year. Zinger 18x6 or 7, using ST fuel, 10% nitro(I think-hard to remember), not sure on the oil. I don't worry much about mid-range, it's either go full bore or landing...
It's a 1.4 right? Wondering how a G23(zenoah) would do? I think it's a 1.6?