Cutting the spring could potentially weaken the ratchet. If it’s a long handle ratchet, I assume the intention is to use it for high loads. I would not cut the spring or soak the head in ATF.
Williams is Snap Ons second line. The line is designed to be robust and economical.
In use it will loosen up. Over time, it may become a favorite. I don’t believe the spring compression will lighten over time, or if it does it will be very slight. What does happen is the gear teeth and pawl will wear. The corners of the teeth will wear down and the face of the teeth will become sort of polished.
If you want a new ratchet to perform like an old ratchet, or you want a new coarse ratchet to feel like a Koken ratchet, it’s possible you could remove the gear and polish it’s teeth. I’d be inclined to get a tiny Arkansas slip to smooth each tooth. I’ve never done it, and not sure I’d recommend it, but in theory, I think if you introduced a ratchet gear to a buffing wheel, I’d bet youd be able to feel the difference.
I’m with
@gatewaysysop I’m not sure I‘d mess with it.