Got my new Chaparral FRN today. It was fine except for the blade action being a bit stiff (no surprise for a new knife) and the lock bar was also difficult to depress. Doing so would leave a groove in my thumb. Following Sharp Guy’s advice I disassembled it, easy enough, cleaned the factory lubricant, moved the lock bar spring forward so that the hump of the spring rested just behind a similar hump on the lock bar. Maybe an eighth of an inch. Lubed the PB washers and reassembled. Now, it is very easy to depress the lock bar and the blade practically falls free with no play.
I suggest that Spyderco improve the lock bar issue by shortening the spring slot or lengthening the spring.
What doesn’t kill you will make you stronger. Except infantry. Infantry will kill you.
“Gentlemen, bring out your men.” — T. J. Jackson, Second Manassas, 1862