Let's see, Stihl wanted $300 to fix a $179 chainsaw...that's what a Stihl ms180 sells for at our local Rural King farm store...
Yep! I did find it quite amusing in that the service tag had "DNR" on it.
Got the saw put back together yesterday. Fired right up and runs and idles fine, even with the ebay carb on it (have a rebuild kit for the original Stihl carb on the way, but it hasn't arrived yet).
So apparently my pinched tit was the issue.
So, in total I have about $63 in the saw, which includes a replacment case and clutch (Huztl, $28), and an ebay carb, fuel line, air filter, and oil line (oil line was junk, $21), a genuine Stihl oil line ($5), a carb rebuild kit and new intake manifold with spacer ($9).
Yes it's still a crappy homeowner saw, BUT I can take disassemble and reassemble the thing pretty quickly so I'll try to keep it running using China parts. Make a good loaner/beater/ATV trail saw so I can save my 346XP for real wood cutting.
Thanks for all the help!
Edited to add, this is a MS180C, which apparently has the "easy start" recoil, which feels really weird to me, and the easy chain tensioning thingy, which I like at first glance, but I'm guessing won't hold up well in the long run.
Ah well, it was free (cheap after buying parts) and it runs!