RE: What kind of fuel to use?
A friend of mine in our club had a super tigre .45 using 15% fuel and it kept dead sticking on him until he used some 10% in it.
I personally use 10% wildcat 2+4 stroke total synthetic fuel and seems to work fine in my engines from .40 2 stroke engines up to my .91 surpass 4 stroke. I found using total synthetic oil compared to castor mix oils, my engines don't get all gummed up and don't leave burn marks on the outside of them.
big dan