Well my engine is not having these problems so I definetly don't want to try anything if its working for me. 10x8 is on the low end of the .46 so that prop might work...but 10x6.... My OS 46 will definetly be maxed out on a 10x6. In fact, my OS 46, will pull an APC 11x8 at virtually the same RPM as an 11x6...maybe I got a good one.

Heres the top flight prop chart.

[link=http://www.uoguelph.ca/~antoon/hobby/propchrt.htm]Top Flight prop chart[/link]