Some of the .050 stuff is getting particularly less robust on the complete assembly, needless to say stretching is a bad issue with that stuff. doesn't seem to be too much of and issue with full sized 3/8 but any of the half height verisons are pretty wimpy. Had a lot of problems last year- crooked cutting that I just couldn't find a reason for, even with a new bar and chain, switched to .058 and .063 problem solved. Hard to say it is just import chain as almost all of it is made in chi-com territory- including Stilh. ah well get what ya pay for i guess.