This message is for Billy Bob:
Thanks for your advice. I finally located a monovalve assembly complete with the washers that I needed at the local junk yard. I was previously told that the wavy washer was sandwiched between the large flat washer and the small flat washer on the assembled monovalve. The assembled monovalve that I got from another diesel had the large flat washer on the top next to the magnet, small flat washer next and then the wavy washer on the bottom of the monovalve. I assume the order of the washers is important - please clarify.