Sold my DHR to a young guy that works with me. He brought it to work the other day and when we put it in the stand there was a line around the BB junction where the downtube joins. Are these known to crack here? Reason I'm asking is this. I had the frame powered again 2 years ago. I didn't ride the bike super hard, nor did this kid (who's 130lbs). Is it more likely that it has four layers of powercoat and the top coat has cracked?