Great article! I'll take this into alot of consideration. It will probably be exactly what I had planned on doing since all I could find OTC is 5%. Its interesting to read that he said they ran really hot. I'd be curious to know how long he ran those fuels at a time. Reason being, when I broke in my K&B .61, it also recommends a fairly low nitro fuel, 10% if I remember correctly. I bought 15%, remembering this is what it ran on for the short period of time it flew many years ago. Anyways, the 15% ran hot as hell and would shut down after about a minute at WOT. I opened up the high end to super rich, to the point it would barely run and kept it at about half to low throttle for awhile. Ran a couple tanks through it this way. Needless to say, after about an hour of this, I adjusted the low end one click or so, leaned it out and she ran perfect, amazing throttle response. Still mildly warm, but not uncomfortably hot like it was before. Never had a dead stick once. Now it starts on the first flip, never used a starter on it, warms up in about 10 seconds and purrrrrrs at a really low idle. I'm wondering if I'll have the same experience with this 1.08.