After your pole has been up there for quite a while, the pieces have settled into place. This is normal. Please watch these two videos in full to Make removal a breeze.
https://www.youtube.com/watch?v=MfW8e7uqfg8
O-RING Issue
https://drive.google.com/file/d/1EjsL2FR_M67lxrQ1ZdWQ-Gj0wChyrMWF/view