ORIGINAL: bruce88123
IF you buy a JR RX like this one
http://www.horizonhobby.com/Products...rodID=JSP30600
which can have it's shift selected to either positive or negative you will be fine.
You can also plug your JR servos into a Futaba RX with no problem, in case you were unaware of that.
The manufacturers have made it pretty easy on us to do just about anything we want.
THANK YOU. Exactly the one I was looking at.