Hey KB, there was a recent thread where a member was having trouble getting the collar out of his swingarm, he soaked it in a 50/50 mix of acetone and tranny fluid for a weekend and it tapped out with little resistance (he was having trouble pressing it out if I remember correctly)
The bushings I understand are best removed by cutting a slot in them with a hand-held hacksaw blade, once a slot is cut in the bushings they're no longer a press fit in their bores and are easily removed.
Hope this helps.
-Alan