It is commonly repeated that WD-40 isn't a proper lubricant, but this is false. The thing about WD-40 is that it dries up after a while, and leaves a protective film. But in the meanwhile, it does work to loosen up tight joints. When it DOES dry up, the lubricating properties are mostly gone, but this is actually what you want. Then, the steel parts can wear against each other and grind each other down, so that eventually, the scissors will work as smoothly as you could hope for.
Leatherman made those scissors tight for a reason: so that after some wear, they would settle in to an acceptable level of friction.
The scissors on my Squirt ES4 were the same way when new. Now that I've exercised them a bit and used them a few times, they're perfect.
It's always tricky with scissors: They need some friction to cut well, but the friction fights the spring and vice versa. Make them smaller, and it becomes even more of a challenge.
Just try not to obsess over it too much in the meanwhile.
Moving on, I see that the OP asked his question about 9 months ago and never bothered to respond, and that sak_fan resurrected a 7 month old thread to ask his question. The rest of us fell in line, trying to be helpful, and now we have a zombie thread on our hands.
This is a delicate balance too: Do I search and resurrect an old thread, so that folks will know I tried to find the answer on my own? Or do I start a new thread, and risk someone claiming that it has been discussed before.
col902: If you're still around, how about letting us know what you've got?