The seatpost on my beater roadbike is 25.8mm as is stamped on the seatpost. The angle of the seatpost is fixed in a grueling upwards tilt and is, um, painful.

I want to replace it with a micro adjust tilt post so that I can change the angle of the seat, but I can't seem to find anything in 25.8mm other than fixed posts. Anyone have any leads for something like this?