Hi All.. ..Just getting a chance to put my tower up..Got it from Tashjian (& the thrust bearing too)..It came with a choice of grease fittings..a cap, and a screw-in type grease fitting..I screwed in the metal grease fitting. ..Question..What type of grease do I "pump" into this thing (gotta buy a grease gun too..more money!) Thanks! 73'..Tom N3ZC