iPod iPod classic volume problems

I just got an iPod classic and the volume is very low, when I turn it up it gets louder but as soon as I set or lock the volume it jumps right back to where it was. I reset it and the volume went up a little, and now when I turn it up it jumps back to that spot. I tried resetting it again to see if it went up any more but it didn't. The little triangle that points out where the volume is stays up at the place where I try to set it, but the bar moves back down. This is very strange.

Has anyone had this problem before? I updated the software through iTunes and that didn't help, I'd rather not restore and have to synch everything again but I will.

Thanks in advance!

The volume limit is what I'm trying to change. I went to settings, then volume limit and tried to move it up. When I move the bar I can hear just fine, but as soon as I try to set or lock the new volume it goes back to being too quiet.