Unless Really bad, make an attempt to straighten them !
Remove the tube from the triple trees, set it on wooden blocks, roll it to the high point, smack it with a large basher while shielding it with another block of wood. Roll it and check for discrepancy...
It would be fairly easy to bust the aluminum fork sliders off, so do NOT support it on them !
The steel tubes are somewhat malleable, so I would spread out the impact a bit to avoid denting the tube.
It might be worthwhile to make a corresponding circular notch in the block used to cushion the blow.
redk