Do you play Loud? Feedback issues? I make custom removable F-Hole covers. I have used these for the past couple of years and have no feedback problems, You can install and take them off in a matter of seconds. Will not harm your finish in any way. Can make them in f-hole shape, lightning bolts, use your imagination. Email me for price and ideas. Check out jakehead.com to see pics of them on my bass or I can email you pics. Thanks. Not looking to get rich, lol. just help out with a problem.