Is it just a matter of cleaning it or will I have to replace it? Can I add a pot to the headphone jack's ground to limit volume? Thanks!
Replace the volume control knob unit on the pcb.
You seem to think there's a reasonable reason for composing at anything less than full volume. Set it to max volume, put a drop of super glue there, fixed.
Contact cleaner might fix it. Spray some into the mechanism of the volume pot and then sweep the pot a bunch of times from max volume to min volume. With my guitar's volume pot I just have to sweep it a few times to get the scratchies out. I tried contact cleaner but the scratchiness just comes back eventually. Just sweeping it works just as well.
A light scrubbing underneath it with Isopropyl alcohol and a toothbrush, then blowing out with comporessed air usually does it for me.
I don't think WD40 is good for clearing pots. Isopropyl alcohol. Or just google, how to clear scratchy pots.
WD40 really isn't good for cleaning pots.
sweep the pot a bunch of times from max volume to min volume.
Would moving the prosound mod connections to the pre-pot positions eliminate this problem? Would that just make the output stay at max volume?
Would moving the prosound mod connections to the pre-pot positions eliminate this problem? Would that just make the output stay at max volume?
Yes and yes.