Thats how i pulled my old bushings out and re-installed them too, but i did cheat and use an air ratchet
The stops are the pintle bars yes, remove the pintle bars and flip then 180 degrees (if the other side hasn't been used) to get a nice smooth edge. Its best if you replace the 4 cams or pucks, whatever your manual calls them too.
As for creeping, can't you adjust the brake to stop it moving? It should be set so the machine will not move with it engaged, even if you push the levers forward on purpose.
On the one i have thats not rite, if i put the revs up a notch and lock the park brake in it will not move. If i don't give it a few revs it stalls the engine.