Did I break it

That's correct on it tending to run cold out of position. It would probably do okay with 1/16 7018 for flat or overhead, but any time its asked for more current I've been able to switch to an 1/8 7014 and run without issues. I didn't mention it's an inverter unit so it does run very hot for what it is. It's classified as higher amperage, but the dial number stops at 80, so that's what I'm going to call it! Here's the link to their site, I got mine for about $225 on Amazon. Given what it is and the price, I believe whether or not you get a good one by luck of the draw, but they are one of the higher rated machines.
Forney Easy Weld 100 ST Stick Machine | Forney Industries
Im guessing these 110V machines have come a far way from early versions
You mentioned 7014 1/8 wire. Today at the show thats what they had available to use
I ran it at max on the machine I was using but it definitely was not enough amperage for that size wire
I think 110 machines serve a useful purpose and come in very handy but ive as of yet not seen one capable of being used in a industrial setting doing pipe or structural work in position
I have a older Miller XMT 350 CV/CC inverter, its a 220/440 single or three phase machine. Since im just about fully retired I want to sell it and im looking at one of these Miller 110/220 inverter 160 amp machines.....Im figuring I could run 1/8 6010 or 3/32 7018 at a pretty good duty cycle and not beating the crap out of the machine, but than again its only for small odds and ends.