Well maybe for now I should borrow your chain and sprockets.  My XR has developed a case of the tweeker teeth as well.  Seems like a ravenous plague.  Once one tooth goes, they all start falling out!  Its purdy but not as bad as yours was yet, another ride should do it. 
I just changed the sprockets on the DR today.  It was even worse that when I changed the XR.  It looked like a dull  circular saw blade.  
What is this, a Price family problem? Not replacing chains/sprockets? 
Seriously though Aaron, you'll be back in one piece real soon, keep your chin up!