Dan
I use a mixture of 91% ispropl alcohol (8 oz)and liquid lanolin (bout 1 tbsp) with good results. I boiled a cup of water in the microwave and set the container (an empty hairspray pump bottle) down in the cup to warm it up. Then shook like crazy. I had read you should use 99% alcohol but couldn't find any so I put a couple of drops of dish detergent in to help it mix.
I have been using the same mix for about 2 years and it still works great. The alcohol dries guickly and the cases just slip in and out of the sizer like they should. Afterward I run them in the tumbler w/a capful of oderless paint thinner.
I can't see if the lanolin separates because the bottle isn't clear, but regardless, I just shake it up really good every time and go to town.