I got a couple really small "dings" on my DF the first time I went out - probably little pebble or something on the log - anyways, I've used the crap out of it since then with not issues what so ever. I'm inclined to think its just a fluke - run a rod over it, strop it a little, and drive on!! Thats what I did - and I was pretty concerned as you must be as well.

A chip is a different story - but a little roll spot for a small pebble or rock on the log won't be a big deal.

Post pix if you can!