Coupant wrote:I compare with a salt1 and a dragonfly2 and only half way into opening(the second half) it fells gritty
If the lower part of the lock bar head is smooth and the part of the tang that it rides on is smooth, then the next place to look is the interface between the sides of the tang and scales (or tang, washers and liners if it's not a lightweight model), if those are clean and smooth (check for sharp edges on the PB washers if you have them) then the pivot and the hole in the tang that the pivot rides in are next. If *all* of those have nice polished surfaces and it still feels gritty, then I'd try a tiny dab of some high quality grease on all the sliding surfaces, that may smooth things out until the knife really breaks in from wear/useage.
As mentioned before, the N5 has a strong spring and that does make it more effort to open than many other Spydies, none of mine are even remotely "flickable". However all three are exceptionally smooth.