That'd probably work. Or don't screw it in so far if you only want to resize part of the neck.
You may need to use a small amount of lube on the neck, I use a dry lube of moly powder and ball bearings to dip the neck in, some use graphite or "Midway Mica" and a gadget that holds brushes vertically to clean the inside of the neck and apply a little lube.
I'd also reccommend you chuck the expander ball into a drill and polish it with fine emery paper to a mirror finish. This will ease thepassage thru the neck, and reduce the tendency of the expander to misalign the neck.
Hope this helps.
Tom
