I had the same problem on the base model I had! I went to the auto store and got a can of silicone spray( its clear in color) !Its like a dry lube I guess as it doesn't leave a residue, spray everything down real good, wiped the excess, and it got quiet! If that don't work theres always white lithium grease in a spray can, but its real messy and it'll stick out like a sore thumb when the wing is up!