I'm not replacing pickups...rather, I'm putting some in a new body. These (Fender Texas Specials) came with short rubber tubes instead of springs for adjustment. Also, the provided adjustment screws are too large (shaft diameter) for the pre-existing holes in the actual pick-ups (not the covers). I've seen cracked pickup bases that are then difficult to adjust, so I want to avoid that. The simple answer seems to get narrower screws for adjustment, but given the expertise here, I thought I'd check.
Also, are the rubber adjustment spacers an okay way to go, or are springs better?
Oh, and while on the subject, is it good to shield the pick-up cavities as well as the pot/switch cavity? If so, also shield the pickguard? I've already done this, but again, I'm relying on your knowledge.