[syncroid]

Don't worry about the alignment. Put the new bearing in and then slide the new LN bearing plate on. You can then grab the plate with your hands and muscle it center. Start the three bolts by hand and draw them all in evenly. The shaft will center itself. Just make sure you are able to start them by hand. I have never pulled all three tensioners to do this job. (only the two at the flywheel end)
Good luck.