Has anyone tried using metal pickup rings instead of plastic ones that are stock? I know the metal bridge gives a telecaster it's classic sound using a single coil pickup. These metal bridges somehow change the magnetic field of the pickup. How would this work with Humbuckers? I need to check with the gurus on this forum before I spend or waste my $20. BTW I have an Epiphone SG Special and looking for a clean tele type tone.