You would be doing a service for rest of us DMSS receiver owners if the faulty receivers were sent back to your distributor or to JR PROPO. If it is a vibration problem that is causing a solder connection to break, switching to the seven-channel receiver may not provide any certain relief. It could be both receivers come off the same assembly line and share the same frailty. If it is a manufacturing problem, XBus would make the situation worst. Instead of just one channel going kaput, every channel on the bus will go out.

I own no RG861B receivers and the one RG731BX I have hasn’t given any problems. It has been in use for a short time. Also it is in a mid size electric so the vibration is low.

Allan