1. no i havent determined how to dissamble it. i dont know how to do it.
2. this post may contain some relevant graphic detail: head disassembly
3. i bet my burro head that the E09 head is a one-piece. i've looked at it under the loupe and there is no seam. With the Quark head, yes, the Quark head is a two-piece. but here with the E09, no, the E09 head is a massive one-piece.