fluid head tripods

Hello All,I have a video camera tripod that has fluid motion head and when I try to use it with Pentax 20x60 binoculars in cool to cold weather it is just about useless,doesn't want to move.I guess the oil inside the head gets too thick.The name on the tripod head is AMBICO.I was just wondering if anybody else has had this problem or is this just because this is cheaper tripod and I HAVE NEVER USED A BOGEN [or any other brand]fluid motion head so I wouldn't know?.Thanks?
>>>>>>>Steve

I believe I can answer my own question,all fluid motion heads become hard to move as they get cold,so I need an alt/az mount or regular motion head for my tripod.
>>>>>Steve