I cant see any binding going on, I'm sure the bearing for the main shaft might need replacing (a little super glue may have gotton on it while repairing body posts) But it isn't locked up but I bet is gummed up a bit.. Ill replace the flybar and see about the toilet bowl. and ill reprt back. and know the blades haven't been changed lately, and after months the edges have gotton dinged and what not( not so pretty but not that bad )