i cleaned and lubricated my Powermatic 66 table saw about 6 months ago and the controls (blade raising and tilting) are getting stiff again..hard to turn...This time I used one of those new fangled dry lubricant spray by locktite, instead of lithium grease or paste wax (which in both instances lasted many years) as I have used in the years past. So my question is ...What do you use to lubricate the blade controls on your saws? and How long should someone expect it to last?