i bought a mij fretless jazz neck for my mij body and it doesn't fit exactly! ?? it fits alright as in it lines up with the holes but there is like a 1mm one side 1/2mm on the other side gap in the neck pocket. nothing drastic but not perfect! does this really matter or is it all voodoo? i have a p bass that has a bit of a gap and it sounds killer. so go figure? basically should i set this one up and get on with it or look around for one that will fit snug?