Meekskin,
The valve to the retracts goes to each retract. on the two lines going to the front gear there should be two line (down and retracted (up)). Makes sure the gear works, then go from there.
Next cut the line going from the valve to the down position, and put a "T" in it. the new line goes to the gear door cyclinder that pushes the cylinder open. Lost yet? If not now go to the line from the valve to the gear up position and put in a "T". You need to know which of the two **** on the clippard you need to use. Stick a piece of line on the bottom and blow in it, no air should come out. If it does try another *** until you find one that it does not come out. When you push the button then it should come out. Which ever *** the air comes out of, you run a line from that *** to the closing end of the door cyclinder. now mount the clippard valve where it contacts the gear leg when the gear retracts. SHould work. Harder to explain than it really is, but it works.
Tommy