And don't forget to file down your rakers (or what ever they're called)
I was once busy cutting a tree down that had died and could have possibly hit my house had it hit the 1 in 360 degrees to fall.
I was cutting it... the tree sat back & pinched my blade. I was stuck. I was in the woods so I could'nt bring my backhoe up to unseat the tree.... no problem... went to garage, got my second bar and a freshly (from the local hardware store) sharpened blade.
Took 5 minutes...removed saw from pinched bar...installed new bar and was going to continue on.....
This freshly sharpened blade would not cut melted butter
Long story short... I'm sure they sharpened the cutters however, must have forgotten about the rakers and because of that, not a single blade would cut into the tree.
I had to go back to garage.... swap out for an old, beat up DULL chain to finally make my cuts.
To say I was furious is an understatement. I've never said anything to them (buy propane from them every now & then) but I've never trusted them again with sharpening my blades. I bought a 100' spool from Oregon Chain, had them turn them into about a handful of new chains for me and now I sharpen my own and if I get into a pinch, I've got an inventory of new sharp chains.