I recently put a new engine in my 2006 r6 and at the same time replaced the chain. Once the new chain was put on and for the first 2 weeks I checked chain slack constantly to make sure everything was ok. Not going to lie I was pretty paranoid over every detail of my finished build. Well a couple nights ago mid ride my chain came off my rear sprocket. It hasn't even been 2 months since the new chain was installed. Not to mention that I checked frequently for a forth of that time. But nonetheless my chain was so loose I slid it back onto the rear sprocket while I was on the side of the road. Does anyone have any idea how this could have happened, and more specifically if there might be any bigger issues at play? I leave for basic soon but I would really love to ride a bit more before I won't be able to for a long time. Thanks so much for the help.