I have a Manfrotto ball head that I bought several years ago. It has been to hell and back!. Recently the head stopped gripping. When it first happened i spit on the head and it gripped. It was a good quick fix in the field. Today I bought some denatured alcohol and tried to clean the ball with that. It is still having trouble gripping the ball. Does anybody know what else I can do? Or is this the end of the road for this head? Please help, as I am on a one month tour of the southwest and am in desperate need of a working tripod. Thanks!!