Ok, i just happened to remove the pick guard for my 2009 MIA P bass the first time other day to notice this dirty great hole in the body. It's between the neck and the split PU, a well cut 3/4" circular hole. Right where i'd want to screw in a thumb rest for some vintage mojo I've searched through the forums and found quite a few references to CNC holes. It seems that some people think they are used for the routing machinary to grip and some people think they are identifiers for different bodies. Anyone got any answers which? Also they don't appear on all Fender bodies, reading around it seems hit and miss with different bodies and locations (MIM, MIJ vs MIA). Whats that all about? Anyone else got the same hole in their P body for their 2009ish? Guess i'm a bit peeved...why Fender?