netdudeuk,
Ok, let's see if we can get you squared away here. For each side of the servo you are going to need 2 of the rubber mounting strips and 2 of the metal grommets. Look at picture #1 and you'll see what I am talking about. You put on if the rubber strips on the top and the bottom of the servo mounting lug. Notice in the rubber mounting strips there is a small split in it, this will line up with a tab on the top of the servo mounting lug. Picture #2 and #3 show how to place the rubber mounting strips. Once you have them in place you will insert one metal grommet into each hole from the bottom of the servo mounting lugs. It's very important that these go in the bottom. In picture #3 you can see the metal grommets in place. Picture #4 show them all in place on the servo mounting lug.

Once you have this all together on both ends of the servo. There is one more point that is very important. When you mount the servo you will place the servo in the mount and then put a screw in each mounting hole to secure the servo in place. When you tighten down the screw you want to STOP when the screw head JUST TOUCHES the rubber. See the last diagram to see how it all should sit. This is very important to do because this setup provides isolation from vibration for the servo. If you tighten the screw too much the servo will no longer be isolated from vibration, and vibration can kill a servo in a heartbeat. So it's very important to no over-tighten the mounting screw.

Please feel free to ask any other questions you may have about this. I hope I was able to clear it up for you.

Ken