I’m looking at upgrading the pickup and electronics in my Japan-made 1954 Precision bass reissue (the one in my profile photo). However, the control cavity is only 20x80mm wide and the bass has mini pots (16mm diameter) since nothing else will fit. I’ve sprayed them twice with contact cleaner but the signal keeps dropping, so they’re not very high quality. What are my options here? I really don’t want to drill out the control cavity or do any other invasive mods. Are there any good mini pots out there? I’d really like the electronics to match the quality of the pickup.