Friday I had a couple of different horns out for practice. Two of my b-flats, my flugel, and my C. To make a long story short, the stand with my C trumpet tipped over and the horn hit the second valve slide. Yesterday when I went to play I found the valve casing must have been bent by the impact. I can get the valve out, but just barely. How big a problem is this to repair, or did I just turn this horn into a doorstop? Thanks.