Runs like a champ. Over a year and yet to see the first deadstick. Can idle through a full tank of fuel without sputtering. I run a 14X6 MA and dont remeber my tach numbers. I think it runs right around 10K. Look in the tachometer forum there are numbers there. It does shake but no too badly. If I trim the throttle below the normal idle it will start to vibrate pretty bad before it eventually cuts out.

I know its not the most powerful, coolest looking or the lightest engine out there. The saito 82 would probably win that category. But for 200 or in my case 150 it was a bargain and it runs fantastic.

I think you would be fine on 10% fuel although I havent tried it. I mostly run this engine and a ST90 and both of those engines run fine on 5%. High nitro fuel is pricey here in Argentina.