My next build will have a top (about 3/8" thick) on the body core. I'd like to take advantage of this and route the body (for the PUs,) put the top on and route the top. I am working by hand with a router plane. Even with very careful measuring I don't think I will be able to exactly route the top in the same place where I've routed the body. Should I just oversize the pickup routes in the body, put the tops on and then make the exact correct size on the top plates? Being 3/8" thick I thought this might be the way to go, but I am not sure.