I just picked up an new to me mill with a Align power feed on it but the plastic drive gear on the bottom stripped out by the previous owner, I am assuming because the limit stop switch stop working. I managed to find and the gear and the new switch to replace them but I was wondering if I should use any lube on the teeth of the gear? The old gear has some sort of grease on it that seems really tacky. If I should put something on it what should I use? The darn gear was worth a small fortune, shipping charges sure drive the price of stuff up....