Was looking at the idler wheel on my DMC 1450 this afternoon and was surprised to see it appears to be disintegrating. Is this something that happens to them with time, or should I be looking for another cause? The tracks were very loose and there was a few chunks coming out of it which I assumed was stones getting between the track and idler wheel. Tightened up the track a little bit, moved the unit forward and back about 30' and the first pic is what it looks like now. The second pic shows what the track looks like. If you grab the outer edge, you can move it up and down about 4" which is what has been recommended as good track tension.