I wanted to post my experience with my recent order of four of these 2166's. I received them yesterday, and all saws had issues, some worse than others:
Saw 1) 2016 manufacture date. The magnesium crankcase is cracked. As pictured the crack between the starter housing bolt and the AV mount. This runs all the way through. Not fixable.
Saw 2) 2016 manufacture date. The rear trigger handle assemble is split in two and the plastic is actually fractured and the pin joining the two halves is missing. Fixable but not acceptable.
Saw 3) 2016 manufacture date. This saw appears used, having multiple scuffs, scrapes, dings and wear marks. Pictures show the handle, muffler, among other areas. Pictures 3 & 4.
Saw 4) 2013 manufacture date. This saw exhibits significant magnesium corrosion. This is present in multiple areas of the crankcase. Paint is chipped and missing where the muffler bolts to the oil tank, and there is corrosion here as well. Picture 5.
Have filed a formal return request through eBay and awaiting response from seller.