I recently bought a vintage '64 slim off ebay. It seems in quite good condition except for an issue, when i look at the blade seated and tightened down. The blade itself is pulled down closer to the safety bar on one side, this is the same when i look at it from both directions. Is this repairable..?? I have been looking at how to do it, but dont have a clue... :/ The seller i purchased from has very good feedback.