Hi again,

The manual for my OS 91SII recommends a 14x7 prop for scale models. I'll probably get that or maybe a 14x8 for my GP Spacewalker. Sound right? And what prop have you used to break in your OS 91SII?

I guess I should be in the engine forum with this. But while I'm at it, the manual states that the carb is adjusted at the factory with fuel containing 20% lubricant and 10% nitro. Should I stay with that? I've been using 18/15 Wildcat on my other OS four strokes.