This Pipe needs to slip over that pipe without catching.
I have a drill press out in the shop, but I lost the key.
So I've been walking around the house, watching tv, boreing them out LOL.
Here are all the pieces going on top. I'm going to cut the domes off the top of the other PVC End Caps,
. . and put Lines in the side of the pipe to let the air out for fans, or put some motorized reservoirs up there.