Silicone ideal but I just did the soldering while the brushes were at maximum extension so any scar from soldering would not line up.

I also pre tinned the pads with solder and the ends of the wires to minimize the time soldering.

I hope to figure out a way to check in on them maybe in a year or so. I'm considering putting in a window

__________________
2011 E70 • N55 (me)
2012 E70 • N63 (wife)