RE: yak and da 50
Right now I have the 3" standoffs, but I wish I would have gone with the 2.5" since I am a little noseheavy. I since have moved my two Li-ion reciever batteries to the rear and dropped the choke servo off the front and it seems to be working great. I flew the first few flights with it nose heavy and it was a huge pain to land hot every time, and when I would try to flair the landings it would wing rock extremely bad. GO TAILHEAVY and enjoy the Yak.
The DA-50 is not that heavier than an Evo 40 that some guys I know have in their Yaks, and with a little more power you have a little more "get you out of trouble" power on the left stick.