I have a SAK Climber in good condition. But the snap on closing the bottle opener/large flat blade has gotten so bad, I almost have to press it down. I have cleaned is with warm soapy water, oiled, cleaned,etc. It actually feels like it is getting worse. All other blades work great. The bottle opener snaps nicely on open and at 90 degrees. It is simply closing it there is about nothing there. Any tips/tricks I am missing???