If I can get my 72 running right again, though I think the fact the cylinder was loose was the issue, I may run the FAI fuel through it and see. All the other Saitos are in planes that need all the oomph they can get. I could also use it in the Cub with the FA 100 in it. In fact that one will be the best candidate since it only needs 1/3 throttle for scale flights, half throttle has the guy wires singing, full has it climbing towards the sun like an F-15.