believe it or not,that thing works like a champ, i rinse em out with a 10 ml syringe with a piece of 3/8 poly tubing attached, the carto fits snug in it battery end in tubing rinse several time in cup a warm water make sur it is chucked up real snug in drill, and caps are tight (there is a reason i know that part) start drill off slow,bring up to full speed,spin about a min or so, leave em out over night,ready next morning for refill. also have a desk lamp i can turn upside down and lay em in they ready bout an hour then.