Can Gibson Deluxe mini humbuckers with adjustable pole-pieces fit into my Firebird guitar?
The pickups will fit into the older style Firebird mounting rings and modification has to be done to have height adjustment. On the Deluxe mini humbuckers the height adjustment is done with a spacer between the leg and modified P-90 cover. The 3/48 machine screw is screwed into a threaded ferrule pressed into the bottom of the pickup cavity. The height adjust screw is held in place with a soldered 3/48 nut below the leg of the pickup. The screw has to be de-soldered to remove the nut which can be difficult to do without the proper de-soldering tools. The legs of the Deluxe mini humbucker are drilled out and you need to use a 3/48 Tinnerman nut around the leg or 3/48 nut soldered to the bottom of both legs (this can be difficult to do too). To properly do the modification you will need: 1. 2 Gibson standard humbucker compression springs 2. 2 – 3/48 nuts to be soldered to the legs or use 2 – 3/48 solderless Tinnermans 3.
