I have found that most organic 'crud' is readily dissolved by lighter fluid and brushing. Lighter fluid will also de-grease the pivot bearing and flush out any particulate matter. I usually follow this up with a good wash in hot soapy (dish detergent) water and a rinse under hot water, all the while opening and closing the knife. Dry under a hair dryer and re-lube.
Regards, Al
The "soul" of hi-tech materials like G-10, H1, ZDP, Titanium, carbon fiber, etc is found in the performance. That appreciation of the "spirit" comes out in time, after use. It's saying, you can depend on me! I'm there for you no matter what! - Sal Glesser