Trying to straighten a warped blade is a subject that has come up here often. Usually the answer is to just hone it using a rolling X stroke. If you can create a bevel on both sides for the full length of the blade then your ok. The width of the bevel will vary but that is of no importance.
Some guys try to use the knife straightening method but that is not advisable with a str8 razor. The steel is to thin and brittle and will crack, ....usually.
Just my $.02,:)