Not that I remember - means I gotta go back and reread. Thanks for the reminder. Narce - that's kinda the idea - an updated Tarkin for starters...
actually make your new head's hole slightly smaller than it needs to be and QUICKLY jam it onto the new mount. That way while the plastic is still heated and pliable from the dremeling it will expand and then cool to the right size. BE very careful not to overcut the opening... you'll ruin a head real quick by cutting to big of a socket... unless you have sculpting putty or want to use the hot glue trick to fix it.