HD Wheel removal

[R44DOR]

Can anyone help what size are the 3 bolt threads on the HD balance wheel on the crank end for the puller to bolted on.

[duff-man]

5/16ths UNF

[R44DOR]

5/16 is to small and 7/16 UNF looks like the size but UNF is not the thread on my engine ??