I use Dow Corning 4, no idea if WeatherFlow endorses such use of a dielectric grease (very light, clear). (FWIW, I’m an EE too, electronics, instrumentation, probably there are many electronics persons here)
I had similar problems with fit - New Station (fantastic), Minor Assembly Problems
Also, sadly my sky just stopped working - I think my Station may have just failed (doubt that is has anything to do with tiny amount of Dow Corning 4 that I used).