I have an extra Lakewood Fork and adjustable pivot ball for a lakewood bell, and I probably have a couple TO bearings if you want to borrow to try and get the geometry right. First though, I'd try just sliding the tranny in, make sure there are no alignment issues and such. For the tranny to not bolt up the mis-alignment would have to be pretty severe, but I am sure crazy stuff happens.
If you take the time to do the bell housing alignment per lakewood's instructions, that would eliminate/minimize any mis-alignment issues. It is time consuming, but worth the effort. There are two methods, one is using offset dowels, the other involves some drilling and welding on the bellhousing. Offset dowels are easier initially, but everytime you pull the thing apart you have to check it again. The drilling and welding is more difficult up front, but once its done you are good to go so long as the bell always is used with that block.
here's a link I have for pivot ball/adjustment from centerforce, but should apply to any setup
http://www.danhardison.com/misc/PIVOTDOC.JPG
Chris