Lower alternator bolt won't go back in, help!

[Tmblackflag]

Good morning,

I'm changing the accessory belt and have the old off and new back on. the manual says to set the tension, then tighten the top pivot bolt, followed the lower bolt.

On first try, i couldn't get the lower bolt to thread in properly. Seems it was off slightly which is odd because it looks like a straight shot through the front/back sides of the alternator.

I tinkered with the pivot bolt and tension a bit, and now i can't get the bolt to go in at all. Seems it goes in half an inch and then I'm stymied.

I've tried removing the pivot bolt and belt entirely, and am now sliding the alternator front to back while trying to get the lower bolt in, but it's simply not going.

Any ideas?