i have several ratchets with the 84t and 120t from Gearwrench as well. love them both and i haven't had a LOT of problems, but have some that reverse. here's what i've learned:
1. don't use a thick grease, causes the pawl to stick and it'll reverse or get stuck on you.
2. i've used superlube with no problems, but only if you use a little bit. too much, and you'll have the same issues as #1.
3. i've also tried 0w-30 Castrol syntec motor oil, and it works well actually. so, this might be an option if you have some motor oil sitting around.
4. if you ever have the reversing problem, what i found out recently (friend brought over his gearwrench ratchet with the problem and asked me to take a look) is that the cause is the pawl not ratcheting to the next set of gear teeth and sticking to the main gear. there are 2 causes to this:
a) if you used a thick grease, it can cause the teeth to stick or otherwise slow or hinder the movement of the pawl.
b) in the switching lever, there's a hole with a spring and a cap on top that pushes the pawl against the center gear. if that spring isn't working properly, it doesn't push the pawl back against the center gear fast enough of strong enough, and the teeth on the pawl will hold on to the center gear and move the pawl with the gear instead of skipping/ratcheting to the next set of teeth. the fix is to take the spring out and stretch it out a bit (to the point where the resting length of the spring is a little bit longer than before) so it applies more force against the pawl.
the first thing I do to fix this is (a), i'll clean everything out and just re-assemble with an oil and see if that fixes it. in the recent case, that didn't fix it so i kept looking at the mechanism to understand where it was failing. then thought of (b) and sure enough that fixed the problem. the spring was really weak, so i stretched it out and that fixed it.
