I just went through this, make sure you have good contact with the screw. I had bolts and used a socket. Put as little wd040 on it as you can. Then work the screw as much as you can, I had maybe 1/4 turn I could make back and forth. Then I let is sit for a while and when I came back I slowly had success. Then I did it again. Ha, I haven't switched the front plate yet it has 3 different screwheads, UGH. I would think the do that on the back not the front.