Pile of parts scrambled eggs saw, a "clutter saw" like my UOMS 555/562 build...wanted a "Red" 372xpw that looks as good as the Jonsered's did... (R.I.P. Jonsered ) So I built one. The following is essentially the "assembly & build" video... And I cover the differences between the two product lines (372 & 2171). I happen to like the Original Edition versions of 372/2171 so THAT was the focus. AND since this is arboristsite.com I had to "Mod" something, so I cut a hole in the muffler. Now its a "Modded" 2171