Re: Need some bass pedal help...Yamaha
If it's metal on metal, could you put a chunk of worn out cymbal felt where the pedal hits the base? Or would that limit your pedal travel?
If it actually shoe noise, you could try just socks or a softer shoe sole to nail it down.
Do you have someone handy who can stick their head down by the pedal and look/listen? Or a small video camera/camera phone?
Sorry, no answers - just more questions.
Good Luck, John