Now to add to the frustration. I got the seals for the oil pressure relief valves because I didn't want to use the old ones, plus I wanted to use copper instead of steel seals. There are two oil pressure valves in a VW 1600. They consist of three parts - a spring, a piston, and a hex plug with the seal. I am missing one of the pistons now. I kept the parts apart from each other as they go into different areas of the case - one in the front and one in the rear. The one in the front is missing the piston. I checked everywhere where it could have possibly rolled and nothing. I think it is hanging around with the missing dowel pin that I have already purchased a replacement for. Aaaarrggghhh.

