The 2 ERN's that i won on ebay were delivered today. They are both really nice razors, but i noticed the one has a really loose blade that has no tension at all when pulled out of the scales, and the blade also wobbles side to side and has to be guided back into the scales. I'm guessing that it is the pivot pin that needs replacing? Is this something best left to a professional? I don't feel comfortable trying to fix this myself as this razor has survived all these years, and i don't want to damage it. Could you point me in the direction of a professional who could take this on? Thanks!