Mine both point slightly down but directly at my head. They each are about 3 feet away from my head. One on either side, about 30 degrees to the front and either side of where I sit. I fussed with them some during the set-up routine, but in practice, sitting at my desk and flying in AH3 they don't seem too fussy about placement.
I've never got the weak signal error, USB issue as a guess? Hope you get it up running and it works well for you Fugi!