You repaired a Bessamatic shutter? Wow - you must be some sort of super-hero. If I remember correctly, the Bessamatic has the same shutter as the Kodak Retina Reflex. When you mention repairing one of those to most camera repairers they run off and hide until you have gone away!
I'm no superhero.....I know enough to get it apart, clean and lubricate and get it back together. If it needs anything beyond very simple cleaning with lighter fluid and a little graphite, I'm in trouble.