Im thinking of having a Jazz bass modded to a P+J bass. If the routing is to fit under a J-pickguard the P-pickup ends up a bit closer to the neck than on a real P-bass. How much and how would this affect the sound? My other option is to buy a J-pickguard from Warmoth where the P-pickup is located in the right position. In that case the routing can not be hidden under a J-pickguard if I would like to return to a J+J config later. Help!!!