With the steering stop holding the triple tree from moving all I did was remove the center triple clamp nut and drop out the tree from the frame. I did use a 1/2" drive breaker bar and socket. Get a long handle on the breaker bar for leverage. Are you doing the BW triple tree for a fat front tire?
Are the forks stuck? Remove the cinch bolts completely, place a cold chisel in the slot, tap gently.
Is the chrome-headed bolt stuck? Big 6-point socket and a hand impact--trying to use a breaker bar can break fork stops and/or bend handlebars.
Funky looking nut that loocks like a sprocket stuck? Steel bar and hammer.
Bolt and nut off and lower won't drop out? Thread chrome-headed bolt finger tight, back of 1 turn, place 2x4 on edge on bolt, smack 2x4 with hammer. Loosen bolt 1 turn, smack 2x4 with hammer. May need to repeat a couple times to get over the tight spot. Be careful not to back the bolt out so far that smacking with a hammer damages the threads.