I am not sure on a front yet... but you're absolutely right about the taper.I am not sure which front you are using but I like the second American flag picture. I am not sure how but it looks like the taper needs work.
I just try to keep an eye on it to see if it's biting in anywhere, and I can move it slightly.Cool wire job by the way! I really like your wiring technique. I run a wire around the base of the pot and attach guy wire to it but I like your method much better. I will be stealing it. I notice you do not use any rubber tubing between wire and tree. How long do you keep you wire on?