Well, I found out that the approvers only needed 30 days usage. They ran it for 5 months making it 69%. I'm going to go back to them second week of June and I will be at 95% or so. Well, during the first couple of months was just getting used to it. I don't like the way the mask feels, but I do like the sleep level I get using my machine. Now I'm used to it, so I pretty much use it everyday.