Quote Originally Posted by AbrandnewL
I cant really imagine it actually turning brown
Believe it. It happens. And it can be hard as hell to get all the stain off. Won't hurt anything though.

Quote Originally Posted by Diplomat
Also, I can't get the darn whip to stay in the wand
Ground glass connections need just the right amount of friction/just the right fit so that it's not too tight or too loose. It's possible your pieces aren't the right match for each other. If your wand is practically falling out of the heater cover, with little to no jerking of the whip, you may need to contact 7th Floor about getting either the HC or wand replaced. If your HC is stained, I'd go for replacing that piece.