I have had a DLE-30 converted to V2 and a DLE-55 for a couple of years now and have found them to run absolutely superbly. I had a little trouble with the original DLE-30 and did the conversion only to discover the real trouble was that my FG cowl had cut the Spark lead and although I thought I had repaired it properly it continued to give me trouble until I ordered a new IGN module. From then on everything was terrific.
Recently I ordered two RCexl kill switches. I put the first one on the 1/4 Super Cub DLE-30 which uses 1 A123 battery for both IGN and RCVR. I flew it for a few months without trouble. I then installed the second one on the Skybolt and DLE-55 which was similarly wired but with two A123 batteries. Suddenly I found that both aircraft started to glitch very badly. The Cub throttle servo (mounted on the firewall) was jumping all over the place and other surfaces were as well. On the Skybolt (throttle servo inside the fuse with ELEV and RUDD) every surface was glitching. On the SKybolt I had flown it a couple of times that day when I noticed it did a little jig in the air. I immediately landed and on checking found the ailerons glitching slightly but as I checked it got worse and then all surfaces went wild.
We checked everything carefully, with experienced pilots, and found that the servos moved a little just as I was turning over the engine. The assumption then was that the IGN module was gone. I removed the Kill switches but still had the extreme glitching. I bought a new IGN module for the DLE-55 and it now runs perfectly. I installed a Smart Fly kill switch in it and it also works properly.
I have a JR9303 on 2.4G and have tested all with the 7CH. JR RCVR. I have also tested with the FrSKY 8CH - both types - which have been in use for some time as well, but get the same results. So it's not the RCVRs.

I would like to return the two IGN modules and the Kill switches to someone to check them out for me. This stuff is supposed to have a worldwide two year warrantee (I think) but no one will look at them untless they sold them. Can anyone advise? Should I just chuck them out and get new ones? I hope this type of breakdown is not to be expected with RCexl.