I'm just about finished with my Slow Stick and finally got the right channel crystal for my RX. (GWS 4P "J" shift). It's hooked up to my GWS100 speed controller and a couple of GWS Mini F servos. I'm using an older Airtronics VG4R TX. I don't have any control rods hooked up at this point. When I plug in the battery the servos go flying all over the place....real spastic. When I switch on the TX, they calm down and go to the correct neutral position and act normally. When I switch the TX off, they go all spastic again. At this point the RX is hanging by the wires and the antenna is stretched out on the work table. Battery is 7.4V 1100NiMH.

So what am I doing wrong?