Recoiling over the Recoil

I bought a Recoil 2 yesterday, there are a few things I like about the machine and a couple that I don't, but the price was right for a machine that puts out 200 psi and dual 3 stage vacuums....   I'm more used to an upright, so it will take a little adjustment and the drain on the waste tank was definitely a design flaw, as the waste water is BELOW the drain hole and even tipping the machine, doesn't completely empty it.... on many jobs, not so big an issue, but when dealing with extremely dirty or pet stained carpet, I would have liked to be able to complete empty the waste tank, and not have the water stinking up my van....    seeing as how the tank seem to have been made by gluing two parts together.... the bottom of the tank should have had a low spot molded into to it to facilitate empting.