That can happen to any folding knife... Like 110s, 112s, 500s and so on...
I have over a 100 Bucklites never had any major problems with any of them...
Now I was just missing a round with a 424 ( bucklite) and was pushing down
really hard and I got it to move a little up and down... No big deal... Very little...
That will happen to most users in time... Now some guys always find something
wrong with every Buck Knife they Buy 110s, 112s, Bucklites, 500s, 300s, and so on...
Just to Bitch about Buck Knives... We can't do anything about it... We don't work for
Buck we just Love are Buck Knives and Collect them... Anyway that's another story...
I would have him send the knife back and refund his money... That way you keep
your good name... Then I would send it to Buck with a note telling them what the
Problem is... Send all 3 of them back and have them fix all 3 of them, if you want
to that is... Always Call Buck first and tell them all about the problems your having
with your NIB Buck knives... And when you get them back send me some pic's of
them and maybe I could use them...
...
Good luck...