Both of those pickups should be thoroughly wax-potted, which should give them a lot of resilience against microphonics. If you're noticing the same resonant frequency on both pickups, then it certainly could be something else on the guitar vibrating (prime suspects would be strings ringing out behind the nut or behind the bridge on a tune-o-matic, loose pots, loose pickguards with shielding on them), but the tapping noise, if that is particularly prominent, would certainly suggest that the pickups could benefit from re-potting. If that's something that you'd like done, drop an email to
sales@bareknucklepickups.co.uk and one of us will help you out with getting them back to us.
