The FL isn't as bad as you'd think. The think I like least about them is instead of having a key for the thrust washer, they have a pin. Kind of a cheap setup. The biggest problem I have with any of my 4 strokes is the vibration ... especially on a light / 3d setup. I had an OS 120 on a cheap barely balsa F4 ... vibrated the thing to death before it ever left the ground. I have an FL that is doing the same thing to an Accel Pitts S. I'm not a real fan of an air bleed carb either, but I'd use my FL before I would my G75.