Medi-cal has made a decision not to cover my moms O2 machine any more. Not sure how soon they will be taking it, but it's the one thing that helps her feel somewhat better. The doc just upped her from 3L to 5L too wtf. The company that supply's the O2 machine she has now, will not sell it to me. I'm going to buy a unit for her, just need help locating a unit that will work. Her current unit is an Invacare Perfecto2 W 5-liter concentrator.*Any help would be greatly appreciated, hell with Medi-cal!!!