... servo that controls the point the loco is running over! I did ask for help on the forum but got nowhere having multiple potential solutions offered Hi Richard, The problem isn't so much with the controllers; it's the servos themselves that are very good at responding to any sort of interference. Typical radio-control applications don't produce much interference energy, but model railways can produce a lot, sometimes an awful lot. One way to solve the problem is to optically isolate the signal between the controller and the servo like this: 2983_281542_290000000.png This version uses a 4N25 opto-isolator and a couple of resistors. It's not expensive. I've tested it with a 30 foot long twisted pair connection and some extremely aggressive electrical noise generators. The tests were 100% successful. I don't know if MERG provides something similar. They might want to consider it if they don't. Regards, ab posted: 28 Oct 2017 21:42 from: d827kelly Richard Spratt wrote: Is CANMIO-SVO an update of CANSERVO8? I have several CANSERVO8s but I'm not entirely happy ...