I took apart my 2004 Military for the first time yesterday to clean and lube. Bought used lnib maybe back in 2006 and it's always had a gritty feel to the action. Was surprised to see that it had some kind of thin plastic like washers. When did Spyderco switch to bronze and would a pair of Para 2 bronze washers fit and smooth up the action? I have some spares. It's not gritty now, but the pivot screw still has to be kept kinda tight to remove any blade play.