I want to lube my tracks. What are the steps to getting to the tracks on the door windows? Anyone done this lately...and is it o.k. to use lith grease or do I need to use something else? 1990 GMC Jimmy 350/TH700R4/NP241/10 bolts, 4" skyjacker lift, 35x12.50R15 BFG All Terrains on 15x10 AR Baja's, Flowmasters.