Originally Posted by LesterOfPuppets

Hmm, come to think of it, welding aluminum to steel (assuming an Al expander wedge) ain't exactly child's play, and then getting your welding bits into the steerer tube from below seems like a lot of work. Unless they welded it to the top nut of the headset, then, wow!!!!

I'm guessing it's gotta be a stuck stem. Happens all the time.