LOL guys! You are onto something now ... like the song says... "we are the dealers, we'll give you everything you need"
Name that tune...
As for the DD props... on 3S it's a must... or I like it anyway. I ran the 9" SF prop on both 2S and 3S trying to kill the motor and couldn't manage to do any damage but the 9" prop is only "recommended" for 2S setup.
I cant imagine how prop flexing could have been causing the screech sound but am also very glad to hear the problem is gone. Like I said, you need the link to program that ESC and I'm not sure there was any setting that would have helped (on the 15a Talon anyway).
On 3S you have the rpm to flex the thin GWS props for sure. If you need to use an SF prop, you would want a different brand prop (perhaps Tuff props).
So, the plane looks well built Eric and you are lighter than me by a lot. I was like 295g I believe but that's with an 850mAh 3S pack onboard. I am running the 70C TP pack that I was using on the Big Beaver and the Racers at first (before going 4S).
Excited for you guys. In calm conditions, you are going to have a killer time with this plane.