I thought that for my VIP project, I would need 2 short flat plastic rings. However, from the photos that are posted of a VIP in Just Out of the Box/ VIP arrived, it appears as though agent317 used a tall ring at the bridge position and a short ring at the neck position. I have no experience of building a humbucker equipped guitar and wonder whether those of you who've built VIPs might have some advice on the type of ring to use. I am also intending to cut/sand the inner part of the neck ring to take a Trembucker. Will this work; are there any traps for the unwary?