Hey, Popeye;
Congratulations on the great deal! What you've got is a Superchief- top of the line for Attex, and a very fast machine.
Once all the bolts are out, the halves should separate without too much trouble, but sometimes it takes some jiggling to make it happen. You should never have to pry on anything once the seal is broken between the cases.
Good luck! ...and post some pictures.
Don
Stuck in the seventies- not in the swamp.
(6) Attex, a Hustler, a Super Swamp Fox, (2) Tricarts, (3) Tri-sports, a Sno-co trike, 3 Dunecycles, and a Starcraft! ...so far