Hi Gents. I just found a killer German folder - stockman - from the late 60's - early 70's. The knife is in New Unused condition, with factory polishing on all blades. I opened each blade about 20 degrees, and there is minimum Snap in each blade! It is as the knife has been sitting on a shelf for 40 years and dirt & dust has seeped between all blades, keeping the blades from opening with that great snap! Being a novice knife nut, I don't want to mess this beauty up! The knife has carbon blades, and stag handles. The appears to be no rust in the joints. Please Help!!! What can I do? Thanks!