No help now. But for anyone contemplating disassembling a lens, MAKE DETAILED NOTES AND DIAGRAMS. Use a marker to show the position of any element relative to another. If you don't do this and the lens has more than one set of helical threads it can be very tedious to reassemble such a lens correctly. Diagram where each individual screw goes -- they may not all be the same length or size. Work on a table with a cloth on it to prevent things from rolling onto the floor. Watch for loose ballbearings and springs. Etc, etc, etc.