Started "attacking" the resin with some of my favorite "weapons", a quick bore drill bit and then the ever trusty Dremel!
Hollowed out the ball until it is fairly uniform with less than an 1/8" thickness left to make room for some goodies.
Heres a shot showing that I went in from the backside and kept grinding until the "open" area of the cockpit was wafer thin and eventually popped out.
And so it goes.