Yep I've seen it too, we had a guy at a former shop that kept having axle seals, oil pan gaskets, etc coming back leaking, come to find out he was just spraying off the leaks and when the vehicle came back leaking "again" he was warrantying the gasket / seal. The boss caught him on it eventually and he got fired.....good luck explaining that at your next job. The best month I ever had was back last May, pulled off over 350 hrs. I was working from 7am to when they would kick me out around 9pm, Monday - Saturday. All I did then was heavy too, so it wasn't flushes and brakes, and you can't take shortcuts at that point, if you do, you're asking for something to come back and bite you in the ass. My body hated me for it, but I was able to pay cash for my wife's engagement ring.....but I'll never do it again.