My 60cm girl has arrived, she's almost ready for primetime now, and last night we put my Sheba head on her. Misheru had done a face-up a while back in anticipation of the doll arriving. So we swapped out her bust to give her some larger assets, MSC'd her with some flat UV-cut, got her head on straight, and dressed her. She has a name now - well, my Sheba head does, she's Kira (as in Kira Nerys from DS9), it somehow just fit her.
I have a number of pictures to share, that I was working on last night, but they'll have to wait until this evening when i get home for me to post them.
In the meantime I thought I would share something I found while we were changing the head. With the new neck piece, we did not have to heat the vinyl or manhandle it to get the neck piece (new neck piece) out of the Gretel head, or to mount the Sheba on it. If you look into the underside of the neck piece there is a small screw with a Phillips head (aka star, or cross head). I got my handy set of jewelers/model makers screwdrivers and selected the appropriate one. 10 seconds later I had removed the neck piece without any trauma to the vinyl. Installing the pice into the Sheba head was a case of removing the head cap, placing the top par of the neck piece correctly, then sliding the lower piece into place and fixing with the fixing screw. Again, no trauma to the face or vinyl and no heating required.
The fixing screw is in the abs plastic, so I wouldn't want to remove it over and over again as that would strip the plastic and make the screw un-usable. However, I am purchasing a couple of spare neck pieces for my Gretel heads, I'll be able to install them quite quickly now. I just thought I would share, I figure that someone has already tried this before, but I have only ever seen the information about heating the vinyl to soften it to install the neck piece, this way just seems easier.