rear end questions

ok guys got the drums off and can see that the studs are not staked but i cant seem to get them out. i tried the way if the hammer, no luck i also tried to press them out with a clamp but to no avail. i thought that maybe its just cause theyre a bit rusty so i sprayed a bunch of wd 40 on there and ill see if that did any thing in the morning. oterwise anyone have any suggestions as to getting them out? any hints at all. i need this car to be on the roadcause its my DD andright now im borrowing my parents cars. im willing to try about anything as long as it doesnt involve torches or grinding.

thanks again
-marc