The head appears to be loctited, so I haven't opened it up. I'm sure it's possible to, with enough force and typical tricks (i.e., heating/freezeing).These are two factors that help satisfy me over getting fewer modes. Have you taken apart the head at all to see how it is put together? Any hope of future emitter swapping?
Hopefully Foursevens will come out with a Neutral White XP-G2, while should take some of the pressure off DIY mods ...