I was today years old when I realised that I attached my sleeves at 10 and 2 o'clock, not at 9 and 3.

I mis-counted the stitches when adding the waist shaping marker and it's only now that I've attached the sleeves and I'm working on the yoke that I realised they're not symmetrical. 100 is not half of 240 - who knew?

It's 4-ply (fingering weight) yarn. I have to rip back 16 inches to fix the waist shaping - or pack it away into the WIP black hole and pretend it never happened.

Anyone else goofed up recently?