There are two hammer strength shoulder press machines, a military press which is sort of like an incline bench, and a behind the neck one. The incline style one bugs my shoulders, but I’ve always liked the feeling of the other one.
Seat position (height) can really make a difference. Make sure the seat is set fairly high so that you’re actually using your shoulders and not just performing a tricep extension.
Way easier than a freeweight overhead press, but I’ve always liked it nonetheless.