I too have the pt mini and drilled out the three holes to 1/16th with a drill bit, it is very soft so I was able to start the holes by simply turning the bit by hand with just fingers, could have finished it that way but once I knew it would bite smoothly I used a hand drill on slow. I would experiment with two holes first then see if you need to open it up more. Some videos on you tube for it are out there. Really opened up the flow. I moved to a larger tank for most use though, for the same reasons others state, just so I didn't have to fill so often. But keep the PT mini for trying new things, or for those juices I like but not for all day pleasures. Opening it up really speeds up the juice use, but also helps the flavor.