If i use a spark plug thread chaser to make sure the hole is clean before i put the plugs back in, wont some of whatevers in the threads just fall into the cylinder? ive seen videos where they put grease or oil or spray lubricant on the thread chaser to make bits of metal or whatver stick to the chaser when you pull it out, but does that get all of it? and whats the best lubricant to use?