Hi, I'd like to install a vintage chrome neck pickup cover on my jazz bass without pickguard. The problem is that the E string buzzes against the inside of the cover because of the lower clearance from not having a pickguard. I was thinking I could put a couple washers under the screw holes but then there would be gaps since the cover attachment points would not be in direct contact with the body. I cannot lower the action to gain more string clearance. Do I have any options that would make this a clean install? Thanks!