Who installed the cam bearings? It's not uncommon to get a cam bearing installed a little crooked and be unable to get the cam back in the block. I have a cam bearing driver that uses the full length of the block to assure the bearings go in straight, but I trashed several bearing sets before I bit the bullet and got the right tool. Don't assume the cam is bent unless you set it up between centers in a lathe and confirm the runout with a dial indicator.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!