I have a problem!!!! I need instruction on fixing a redwood oak floor with a natural sealer the edges are sanded to 80 grit and the center was drum sanded with 50 grit drum and of course the edges and doorways look polished and the center looks grainy the polyurethane is clean and has excellent coverage I am needing to make the floor look like the edges and doorways with a polished look where do I start???? Omg the bevel has been totally cut out of the floor and is now flat uuuuuggggg what a hard job!!! Please again please help me fix this....

sand the rest of the floor with 80 grit and then screen..this should even it out for you..if you are just doing a a natural finish, this difference shouldn't be noticeable..if you are staining, you are in trouble..