Yes, they do, if it's PB washers, there's no need for oil, except along the tang and the omega springs contact points.
I'd also recommend adjusting the pivot, sounds like you might be too tight, so I'd recommend that you loosen the screw by increments or degrees. 1/32 of a turn or about 4°, the smaller the action the more you can gauge where the sweet spot is.
Also if it's D2 it is a coated blade, I think... did you notice if the tang was coated or not?
If they coated the tang I recommend a flat surface and wet/dry sand paper, 600 to removed the coating and maybe 1500 to 2000 to semi polish the surface.