I've got a Provista Air 18 tripod that I purchased in March of 2008. Recently one of the lower leg segments came off during a shoot. Upon examination I could see that one of the hex locking mechanisms (the one connecting the leg to the upper segment) had broken and allowed the leg to slip off.

I think I'm covered under warranty, but I think I could replace the part and fix it myself if I can get the broken piece. Is there any way to obtain this part?

If not, what kind of turnaround can I expect on a warranty claim?

Thanks