is there some sort of grease (lithium grease?) inside the stick where the mechanism is? one or 2 of my controllers feel... sluggish? like if you move the stick all the way to the left, and then just let go it doesnt feel as quick to center as another controller. i cleaned out the thumbstick with alcohol and q tips but idk if theres some sort of grease that should be there. like the dvd drive laser rails.