Some corrections, like knots and really severe bends are best done with steam. But most can be done with heat once you get your bow bending.
Just my opinion, but if you can't use dry heat to make corrections, you shouldn't be bending the limbs anyhow. Stream corrections should be made before you start bending the bow and use only heat after that. Or at least that's my course of action.
A lot of times, corrections you previously made, will back off as wood is removed. Very commom to have to make multiple corrections as you tiller out the bow.....Art