I suggest that you map out everything in the front end that moves and redo the spraying with the help of a friend bouncing the front end while you lay underneath and spray and listen. When you have soaked everything and it still squeaks then it's the metal on metal exam. You do the same thing and try to isolate the side it is coming from and then have the friend boune the front using the bumper (each side) then the fenders by laying on them. We are looking for a metal squeak. I had a squeak as you describe and found that a metal tab on the front of the left fender was touching the bumper. I had to remove the wheel, but I knew that it was coming from the drivers side. Good Luck.