yeah, they are really stiff for park, but there's a couple things you can do if that's what you ride mostly.
1. take out the little screw behind the canting adjustment on the side of the boot
2. put the rubber sole (should come in the box) in instead of the plastic one that comes in the boot, this should be more comfortable when landing, the other is better for really skiing hard.
3. adjust the 3d buckle (green one) to the position furthest back, most people prefer it that way.
hope this helps if you haven't done it already.
'it's like that, and that's the way it is.'
Jam Master Jay will be missed. Legends never die, they just change forms.