Yeah the bearing clamp and puller have always worked for me but I don't use heat unless I want to melt the crank seal. If the boss won't move under tension you just support one side of the boss while you tap the other side with a hammer then retighten the puller, if you tap too much with the hammer on the side of the boss they can crack down one side. I usually use a fair amount of wd40 in the process.
