I tried using PB Blaster on them. I sprayed some on right when I got home from work and a while later when I went out to work on them I did it again and they still wouldn't come loose. By that time I already had them rounded off so I figured cutting through them would be the easiest thing to do with the tools that I had. I still am not sure how I am going to get the other two pulled out. I am going to go to a store tonight and see what I can find. I saw a few things that might work but I am not sure. It is tough to get much in there to get at them because of the way they are mounted.
