Can someone please tell me if these two are compatible? I run two other receivers but they R603FF. Every time I try to link them, the light on the receiver goes from a blinking red to a blinking green. In the manual it mentions that it is receiving the signal, but the I.D is unmatched. WTF what is going on? I bought this used from a fellow member, and he said it was working.I did some searching and some people run these two together. Any info would be of great help. Thanks.........