The other day on the way into work at my highly boring day job, I saw a guy trimming the edges with his trimmer upside down. I thought, "How interesting, never seen that done before". So, naturally, I go home, remove the gaurd (way better, by the way, thanks to previous posts on this), and flip that sucker over, and sure enough, it works like a charm! Is this going to hurt the engine or anything else? Surely someone on here does this too, or has tried it, and not just the guy that weedeats the walkways at my job. Thanks to everyone who is so helpful on this site.