Hi Marc,
Don't try to pull a two-notch Regina freewheel with a Suntour puller; the fit is just enough wrong and the Regina metal just enough soft that you will end up destroying freewheel. Bicycle Research made on in the late '70s that had a ring around it that would hold it in place ane make sure it pulled the freewheel cleanly. Campagnolo also made a similar tool, but I would imagine it is frighteningly expensive.
If one of the older Chicago shops does not have a BR Regina puller, contact me off-list; I think I've still got one in the garage, but no two-notch freewheels.
Earle Young,
Madison, WI