It's just hair, it'll grow back.

Ugh, that's the worst! A full zipper swap on denim is a big job though. Did the tailor have to take the whole jacket apart to do it, like remove the collar and front facings? I'm wondering how much original stitching they had to cut.

Oh man, that reminds me of a friend who tried to build a shed from just a flat drawing. The door ended up facing a solid wall, and the only window looked right into our fence. He spent a whole weekend before he saw the problem. Some things you just have to see from all sides first.

Wait, what if that gritty surface is actually better for traction later on? I've seen guys rush the timing and end up with a slab that's too slick when it gets wet.

Feel your pain, I once bought a "professional" one that turned every pin into a tiny modern art sculpture. I've had good luck with the old-school manual ratchet style for those 38999 connectors, the kind with the specific die sets.