After pulling the fuel line out of the fuel filter housing, I found two O-rings and two spacers that somehow slide over the fuel line when it is inserted back into the housing.  Does anyone have a diagram or know the order these go back in?  I think I guessed wrong because it was extremely difficult to reinsert and now it has a slow leak.  The line has a green clip to hold it in.  I placed the black spacer on the line first, then a brown o-ring, then a smaller clear spacer, then finally a yellow o-ring.