Since only one person has spoken up I am going to. If you are not experienced from ruining a couple of knives doing this in the past, I would not take one completely apart. If you want to play around doing it for the experience, that is another matter. Someone of experience chime in here and state that they have successfully bent a 300 spring and repaired the knife to the expected tension of a proper factory issue ???
I have ruined a couple. All I have been successful at was lightly squeezing the bolsters, and taking a pointed punch an tapping a dent in the off side, middle of the pin, carefully supported so you won't move pin out the other side. But, if you want a nice knife here is what I would do.
You go to the website get the number, you call customer service and describe the problem, CS says send it in you get name of who you talked to in CS and you tell them what your problem is. Make a note of this. Send in knife. I believe CS calls are to a 800 number. Yes, you are out $6.00 to send it in a insured box. Use a padded envelope if you prefer for cheaper price. Envelopes and insured boxes can be bought in Post Office, wrap knife in your note, jam in some paper towels your bring in a pocket so knife won't move. Write address as they state on website - BKI. Don't use Buck Knives on outside address. You will get back a fixed knife. If you don't, then call back and with a decent but determined voice complain and then come here and you can complain all you want and I will defend you from all comers because you gave it a decent effort. If you mess with it first your warranty is void............300Bucks