sounds like, tension/lube problems, blade could be too tight, and not recieving lube, try 2 make the blade as tight as you can then slack it a tiny bit, so theirs a little bit of slide between the blade and the blade bar. try spraying the blade with WD-40 before you start, old componets might be poorly lubed, due to time spent unused... i hope this helps
-Hawaii Chainsaw Guru Justin -
-Hawaii Chainsaw Guru Justin-, November 2008