Wonky Knobs

[Skol303]

I've borrowed a bass off a mate that I'm considering buying from him sometime in the New Year: a Fender American Deluxe Jazz V. Like this one only red/black:

http://www.fender.com/en-GB/series/american-deluxe/american-deluxe-jazz-bass-v-five-string-ash-maple-fingerboard-white-blonde/

Had my eye on one for a while. Plays and sounds great. I love it.

But... the knobs are wonky! By that I mean they're not level - they turn on the pegs at a slightly uneven axis. The pegs themselves appear fine.

My mate says he hadn't noticed and knowing him I don't doubt it. But it's rung an alarm bell with me. Is it common to find uneven knobs on a bass of this price range (£1500 new)? And is it something I should be concerned about?

I'm assuming it's an easy fix, but I wanted to check opinions here before I start discussing money with my mate.

Cheers.