I have a 12 Channel Voltage Free Relay that i installed approx 2 .5 years ago. I have known for some time now that the number 4 override button on the front of the relay is jammed in but have not worried about it to much as i dont really use it. I have had a couple of problems of recent with cbus stopping and i think i have narrowed it down to this button causing the network to go into learn mode. Does anyone have any ideas on how to fix this button as i am not real keen on buying a whole new 12 channel relay to fix a button i never use. Thanks