I received my new Appolo SS prop yesterday and tried it out today. It seems to put my F150 right in the recommended RPM range (5900) which is a good sign. However, the tapered thrust washer included with the new hub kit does not seat in on the shaft as much as the original. Due to the space pushing everything back further, I am unable to put the cotter pin on after the prop nut. Just wondering, if I may have something in the wrong place or perhaps even the wrong hub kit. <br /><br />Helpful Advice Appreciated<br /><br />Kevin