Hello Marvin, all I can offer is the DIY site write-up pics. I did that write-up when I did my monovalve and on my 87 300SDL 126, the wave spring was between the two washers when I opened mine up so I put thigs back in the same order and thus far it has worked as expected so I would reccomend that way! Fortunately as you are probably now aware this procedure is pretty easy so you can try both ways and figure out the best way for your vehicle! Glad you could make use of the DIY site (it was TXBill's idea and effort) and good luck!