TOPIC: Slipping gear or Prop

What kind of "bolt" is in there? The same as the pivot pin in the picture? There is only one thing that will work properly and it looks like that picture.

You can verify what you have in there by loosening the screw and pulling it out only part way. Don't remove it fully, as it'll disengage the shift yoke and potentially cause a lot of mischief.

If it's the correct part, it'll be evident once it's partially-pulled for inspection. Maybe there was a new one in a kit you ordered??

Well, the lower unit is joined with the motor at last. Getting all of those water tubes aligned was difficult. I was struggling with a flashlight in order to see what I was doing while not getting the flashlight stuck in there when I was wishing I could bend light. Then I remembered I have LED string light from my holiday display project boy did that help! Add in a USB snake camera and I finally got everything lined up!
I will start testing everything next week, I am a bit nervous about starting it for the first time. I am also going to make sure that the shifter is properly set. Any other things I should check out on the first start?

So, a fail on the testing. It took a while to get it started but once it did it seemed like the gears were working. Forward definitely worked, reverse and neutral worked ish...
After a few changing of the gears it didn't seem like it ever went out of forward. The positioning on the motor for the gear location was okay but the result just wasn't right. I shut it down and then drained some oil out to discover that it was milky....water was in it. I need to understand the proper way to use the seal replacement, I probably was trying to be cautious and not use too much. I replaced all gaskets that I could find to purchase but I didn't add the form a gasket to the ones that I purchased. If anyone knows of some videos that might be helpful please let me know. I found one tiny piece of metal in the pan so something grinded but nothing major. As soon as I can face it (need to travel for a week or so) I will start the disassemble again. I am hoping that I will find the leak before the gearcase, I really don't want to take that apart again although it would be easier the 2nd time around. Feeling a little depressed but I must admit I figured the chances of it working the 1st time around was rather slim.