Hello all. This is my first new thread, lots of great reading over the past few months though. I puchased a Stihl 030AV at an auction and was wondering what to do with it. I started taking it apart last night and found the following: Top handle casing cracked (is the case aluminum or magnesium?), top AV mount busted (probably caused the case crack), spur sprocket shot - was using a 3/8LP .050 chain on a .058 hard nosed bar, Piston and Cylinder look great, no scoring. This thing runs great and since I only have an occasional use for a chainsaw I thought about putting it back together with a new AV mount and running it the way it is. This thing is in nice shape other than the crack. Should I even think about using it seeing as it has no chain brake? Should I part it out and continue using my safety laden Crapsman (I MIGHT cut 1 tree every 2 years)? Thanks.