yer i had the same problem. i destroyed a puller trying to modifiy it to work... i ended up destroying the pulley at the same time. and it still wouldnt come off.
then one day my mate came round, he cant talk, but i left him to play with the engine for a bit. i come back 5mins later and hes got the damn thing off. he just the claw end of a largish claw hammer. apparently it came off very easy....
so give that a go i reckon, it sounds agricultural.. but if it works...