Try this and it won't cost you a dine.....maybe a valve cover gasket if it gets damaged.
it will only take you 10 minutes and save you a set of intake gasket and a lot more then 10 minutes
loosen the right rear rocker shaft bolt, 1/2 of a turn.
Do the same to the left front rocker shaft bolt.
start it and see if them two cyl come to life. if they do you can buy some rocker pedistal shims and fix the problem or spend the $$ to buy some pushrods that or .020" shorter.
if neither cyl come to life, then take the intake off just to be sure.