carnut1947
08-12-2015, 04:39 PM
I just bought this 84 635 CSI, I also own an 88 Mercedes 300SE. The BMW's antenna would not fully retract or extend (bent) As luck would have it, I had 3 extra masts for the Mercedes. 2 notched, one smooth nylon not knowing what my car had. Well, I pulled out the BMW one and it was a notched one. Stuck my Mercedes mast in and it works faultlessly! Thought this might help someone else.