I have the same problem. The C terminal to the left of station 9 is damaged. The wire release button is pushed all the way down. Thankfully I do not need it currently but qwould like to know if it is easily replaced
Yes I’m just installing mine, can not get the common line to hold wire. Tried over and over, so decided to put a extremely small flat screwdriver in the slot to ensure it was not held up somewhere. Guess what it fell apart! Now can’t use it.9