I have been trying to get out as much as possible despite the super cold temps we have been having. When its below freezing (sometimes my rides are at about 0*) my hub freezes up and skips. on one ride it completely froze and spun freely both directions until it warmed up. so my question is what can I do to prevent this from happening? It is a specialized/DT swiss hub and right now I have normal grease in there.