bags in the winter?

just be careful.. that you don't get air line too hot cause it will melt.

my front valves are under the hood and ive never had the prob with them freezing b/c of the heat....however i live in texas our winters arent tooo bad....only on those occasional freezing mornings did my rear valves stick but i had them in the bed so it was no biggie to pour hot water on them....this is something you guys in colder climate need to think about, i would say mount your valves cleanly but make sure you can still get to them for stuff like this...the airbrake antifreeze is a damn good idea!