I've been able to do it in the past, but it won't let me do it now. JamesG and I PM'ed back and forth a couple of times because he was having the same problem. It seems others on this site are able to do it - unless it's a problem on my end. Is there any way to find out? Thanks.

At the bottom of the video you want to post click share instead of embed

then check the box that says short URL

paste the code after the last slash when you click the youtube icon

I'll try it - thanks, Charles!!