Just yanked my GT40's off of my baby. I have new valves coming and need to know what I need to swap them out. Any links on how the retainers come out. I went to Autozone and bought the valve spring compressor. The overhaed valve type you can use with the heads on or off the car. The tool is cheap and keeps popping off. When it does compress the spring there is a cup that the retainers are in. They wont seperate or lift out with a magnet. I have never done a valve swap before so I'm not sure how the locks and retainers go on. I usually have the shop do it. Any links with pics would be great!!