I've got a 105 also. I've been shooting a lot of acrylics and Future. I use windshield washer cleaner to soak everything in. The only parts I don't soak are the air valve assembly, the needle tube/shank assembly and the back lever. Everything else goes in the cleaner. I use stronger window cleaner sprayed on a paper towel to wipe everything down after a good soak. Toothbrushes get the stubborn stuff out of the cup lid. I bought a set of airbrush cleaners that I use on the small orifices of the main body of the AB. Windshield washer fluid is a lot cheaper than thinner and more effective than plain water.