shaving seal fur?

i apologize, i haven't posted on here in a very long time so if i'm doing anything wrong, let me know.

however; i have a question for the community. i'm not sure if anyone has an answer.

i notice that if i ever try and shave seal fur. its not that it wont shave, but it shaves awkwardly. no matter which guard i use, or how little or gentle i am with it. it always winds up having a sort of crop rows appearance? there's lines in it that you can see from where the clippers shaved. i apologize that i have no pictures.

if it means anything, i take very good care of my clippers and clean them after each use and oil them when needed. they shave other types of fur very very well so i'm very convinced its not an issue present in my clippers.

i know for the most part you really don't need to shave seal fur as its very short and sleek already. but i usually wind up shaving a little on the ears and muzzle if i use it and it always gets this really unappealing look. i've asked several other makes and they agree with me that it does shave awkwardly.

its there anyway to shave seal fur so that it stays smooth looking or is it just the nature of the fur to not really enjoy being shaved at all?