I have a new 52/20 Fastrak and I have been running it with the gator blades. After reading some posts, I wanted to try to put the stock blades on the bottom and have the gator blades on top (doubling up). This worked well and seemed to really shread the thick, lush grass. My question is this. Will this cause any harm to anything? Do you think this results in a better cut, as a lot of pros seem to be doing this now! Any comments are welcome.