Not sure if I should start a new thread, but I had one on a piston stop for the 011 (consensus was the metal one I had was not good to use, so go for rope or impact), I got the clutch off to lubricate the bearing, but figured I might as well replace the bearing and the spur sprocket. The local dealer had to order the bearing, but the 7 tooth spur sprocket 1120 640 2005 seems to be no longer available (NLA). The dealer is going to explore that further. Not sure if the 6 tooth sprocket is NLA, but I have seen more of those online both Stihl or aftermarket. The wear on my current sprocket is not bad and the saw sees low use currently so this is hardly a priority. I guess I'm wondering if anyone familiar with these saws knows of a drop in replacement, or if I could run the 6 tooth sprocket without needing to shorten the chains I have. Thanks.