I am trying to install a Hustler prop on my OMC 3.0L with omc outdrive. The directions says I need a thrust washer on before I install the prop. I did not see a removeable washer on the last prop I took off, but after looking at my shaft I did see a raised area that looks like a washer but it doesn't seem to be removeable. Is this considered a thrust washer and do I have the prop installed correctly. Also I had a washer with splines on the last prop that was under the nut and pin. However this prop had an additional silver cap that had to be put on, leaving no space for the washer with splines. Do I need this washer? I have included pictures of the components. Thanks for any help.