I think you'd stand a real good chance of breaking something you don't want to break. I think its probably hanging up on something or you have a bolt still in place, but perhaps a bit loose. Try counting the bellhousing bolts you've removed. In total, including the starter, I believe there are fifteen. There are a couple across the top which can be a bit difficult.

I have a rough drawing of the bolt pattern I can email you if you PM me with an address.

This thing must be well supported in order to come off straight. It can't come off hanging down. I used a floor jack with a transmission adapter when I did mine. Coming off was easy. Putting it back on was a royal pain.