7sleeper
Addicted to ArboristSite
Sorry don't want to keep the flak up you are encountering but putting a 16 inch bar on a 40cc saw is overly optimistic. Kind of like adding monster tires to a standard beetle... 14 inch is top if you consider full bar contact!...
I dressed the 16" bar and went through a couple chains with no real success, they cut crooked despite my best filing jobs. ...
Further if you have problems with your chain cutting streight consider changing your filling system. I recomend one of the el cheapo electric chain grinders. Ideal to true out everything again and MUCH more precise than any hobby filer. Something like this. Just don't forget to let the grinder do the work, in other words THIS AIN'T NO ANGLE GRINDER!
Good luck,
7