I bought a stihl 028 Super on eBay like a dummy.Had bought a good 064 and 029 so I guess it was time to get a dud. This one is completely worn out. I bought a new spur sprocket upgrade.Rebuilt the carburetor. Took the cylinder and piston off and ordered a new one. I may or may not have enough sense to get it back together. So far I have $400 in this saw and it looks like crap. All I wanted to do was cut a little fire wood. Gotta love it.