I was going to thats why I had a 3-1 in the parts drawer brand new. But considering the RX/3-1/Hiller/TX...it was cheaper just to snag one off E-Bay for less than $150.00. What's the bonus you ask...I've got a fully operational BCP AND BCPP (as soon as I get another crystal set and the servo gets here). It appears that I've become a master at setting these things up. I looked at the TX settings, and I looked at the head...I knew what adjustments to make and where. Made the adjustments and put it up...hovered nearly hands off. I don't think that was dumb luck because it's set exactly like my CP, and flies almost the same.