Was putting my prop back on tonight, It seemed to be tightening up well, but then when I went for that extra quarter turn on the prop nut, it actually got looser (like I had stripped it). Is it possible to strip something like that? I could see the hole for the cotter pin, so I did put it in and the prop seems reasonably snug, just don't know what happened there? Everything fine or did I just ruin my fishing for tomorrow? I had the motor in gear while I was turning it if this means anything.