I make up my own lube. Have a local bee keeper I buy bee's wax from at a reasonable price, and he does a great job of filtering it to get it very clean.

My mixture is extremely simple. It's 50% bee's wax, 40% Crisco, and 10% Vaseline, all by weight. In the summer when it gets too hot I cut down on the Crisco to help make it slightly firmer.