Soaking in oil with pins can cause a loose pivot. Meaning if it's just tight enough to hold the blade open then you lube the pivot...
Not a bad thing, just watch for it and your fingers. With a little cleaning in the pivot, it can be just fine. Or tighten just a little.
Good point! But I was referring to the penning - the pattern of pins that decorate the scales, rather than the functional pins that hold the parts together.