I think you guys are all talking about speed nuts. I've never had my top off but if they're the same clip on nuts that hold together pretty much the whole nose of the truck, they're called speed nuts.
And it sounds like yours are worn out. The only way those little suckers do a good job is if they haven't been removed or messed with. You might have luck taking a pair of lineman's pliers and squeezing the back side. Don't bother trying to squeeze the front. It won't work. You have to get them from where it bends around on itself and close that gap.
However, there's a good chance you're breaking it cause it's 22+ years old and a 16th thick.
When they're new, they bite just hard enough to not move freely in their slot.
I'm gonna try and find another source for them besides jbg because they're nucking futs with their pricing. On pretty much everything.
If you can get jbg on the phone you can do to them what I do to summit racing when I have a question. Ask for the specs on the part number and what diameter bolt they match. If they're dumb and tell you, put that into Amazon and bam.
Or, if you're more honest than myself, take the bolt to a decent building or hardware supply house and ask them to check diameter, pitch and thread count on your bolt. And then order accordingly.
The price shown on that link is for 2 bags of 20 pieces. Not 2 speed nuts. I was a little nervous I was gonna have to recant my previous statement about jbg.