Went out yesterday to change primary fluid, shifting seemed bad and N was hard to find. Pulled plug and there was metal pices about 1/2 long stuck to plug. Opened up inspection cover and keyper ring off of chain tensioner shoe had come off and had gone through the gears and chain and was chewed into pices, shoe had slid all the way over and chain was only running on about 1/2 of the pad. Chain had some rub makres on outside of chain i dont know what it could of been rubbing ? Replaced key ring , got shoe back on and chain tension set. Was wondering if yall think any of the chunks went in and messed with clutch pack? seems fine but time will tell.. Iam going to ride about 50 or 100 miles and change agin just to see if anymore metal comes out.