I worked with a company that had a 6700 once. Poorly maintained, needed some TLC. Stalled when hot, it had been drug through heck. Only a year old, too. I never used it except once. I had an 038Magnum for my crew. The one time I used it, it ran OK, but I was just trying to finish a job and didn't consider cleaning it up and servicing it to see how it would run. (I'm a control freak. If I haven't serviced it, I don't run it.)