I'm just wondering what the elevation is in San Antonio, Texas. Way up here in New Mexico at 4600 ft the air is really, really thin and the Moki doesn't breathe as well as it does down there. I tried running without the cline, and consistant performance went out the window. The 20X10 prop, I tried also, but got better preformance with the 20x8. Just goes to show that elevation does MATTER.