Appreciate the suggestions. Got main sleeve installed this morning. Gonna give sealant a good day or two before trimming flush at flywheel flange. As sleeves go, a longer narrower one would self-straighten as it goes, but this one required some attention to that detail because it's so wide. Was able to get a good look from all angles and in the end it's nice and straight and I'm satisfied it'll work great, as intended.
