So, you don't see where or how it caused an interference? The flywheel teeth usually leave their impression somewhere.

I usually lay the starters nose-to-nose and flange-to-nose-to-flange and verify the noses are the same depth, etc.

If the starter engaged, but is itself bound-up and the Bendix didn't retract until you pulled it - that may be the issue. You can take the starter and have it tested where you bought it - if you're not comfortable testing it yourself.

I've replaced a lot of starters in my life and you don't generally need to have your old one rebuilt. Often they say "sure, we'll rebuild it" and then give you another one anyway. They are not hard to rebuild, so maybe you should take on the task and add it to the things you did on the car...