That's how long I got out of my 8-ply spindle-spun driveband.
I was muttering under my breath about the problem when DH looked over at my wheel and asked if the drive wheel rim was supposed to be pointing so far left (from his POV) of the "little pulley spinny bits over here closest to me".
Knock me over with a ton of bricks.
It looks as if small hands have been futzing with the wheel alignment and I never noticed. It is a Norwegian bench-style wheel with all the fiddly little mechanical bits required to properly align things.
Yes, someone named Not Me had screwed this hanger screw in and that hanger screw out, plus had twisted one of the horizontal adjustment screws. So not only was the wheel off-center in the horizontal plane, the camber was badly out as well.
I've spun myself a 16-ply driveband - almost 2 hours of spinning and plying for a 10' length of cord! - gotten the wheel back into some semblance of correct alignment, and now I'm waiting to see how much work I'll get out of the band.
I have 8 bobbins to ply off (well, I will have by bedtime tonight). Cross your fingers that I get them done, or I'm liable to use this damned wheel as kindling :D