hey 4x4 you have another name for a flat dolly? i tried searching at handsontools.com butcouldnt find one i see like toe dolly etc.
on the upside i found two shrinking hammers since my cheap @ss harbor freight set didnt come with one. I borrow a buddies hammers and I can tell the difference in a good hammer vs my 20.00 special but its what i got so i use them and have had decent luck with alot of patience.
links to the two hammers
they dont show up by browsing the hammers and dollys you have to search for shrinking hammers