Help! Pedal spring making ugly noise.


New member
So I'm trying out my Mapex single pedal for the first time in a while, and I noticed that when I bury the beater, the spring makes a strained ringing, buzzing noise. If I let the pedal rebound, it doesn't make the sound, and if I hold the spring still while using the pedal, it remains silent. I've tried adjusting the tension to no avail, and I have no idea why it's doing this.
Do I need a new spring? Is there something I can do to fix this?