Flexplate install tricks?

The last bolt only grabs a thread or two. I have tried with all other bolts tightened, and I have tried with them as loose as they can be for me to still spin it. Its almost like the TQ bolt hole is just ever so slightly off. I am looking at trying to tap it, but can't seem to get it started just right. I even ran all the bolts in all the way before I ever installed. I am puzzled. Any tricks?