That is interesting. When I made the slot, I had a square end and then added the center of the slot and used that to put a circle on the end. I watched for the tangent sign when adding the circle, I guess both sides did not show the tangent symbol. So, I can add the circle and then just put a tangent constraint between the radius and the sides of the slot. I found the design explorer as suggested and found out what the actual name of the file is. I use so many names depending on what I want to do. I will have to stop doing that.
I appreciate all the help.
papajoe41