I was also wondering if you need to grain fill a guitar with a maple top and a Basswood body (ES 2V)? And, has PitBull ever considered making a "route-out" for a control cavity on say an ES 2V semi-hollow to make it easier to install controls instead of fishing them thru the "F" holes, which can be a pain the you-know what! I have a Warmoth MoonCaster semi-hollow with the open route-out in the rear and it was a joy to wire up-no problems.