But where are the hammers?
I see nothing there over 24 oz...

Those are merely suggestions....
Seriously, in our business a brass hammer or drift gets more done than an 18 lb sledge hammer.
If it wont go with a few light taps, a bigger hammer is just going to make it more out of line, and then destroy it.
Better to back off and get everything lined up and properly clearanced.
Removing something takes a different kind of finesse, but also NOT a bigger hammer.
Cutoff wheel, Rosebud tip, maybe even just a gentle heat and tap.
Otherwise, select the right cutting tip and let the blue tool eat.