Thanks for the info, AJ.

Btw, I still run the MAS props on my OS engines, but I use the 9x3 on most of my Webras. However, I do have one Webra that has eaten too much dirt, and it doesn't put out the RPM it used to. But Webras are ported such that they don't like running slow. So I run a MAS 9x4 on that one engine, and that allows it to wind back up the upper 18k range, which isn't really that much power, but it's enough to fly on.