I'm over 350 and I just seen the option to change, so....
Custom User Title
This is the title that appears beneath your name on your posts. Check the 'Reset' box if you wish to use the default title for your usergroup and post count.
Your current user title is
....#1 TECH N9NE FAN.....
IT'S UNDER "EDIT PROFILE" @ THE TOP........ if not, then you don't have enough posts......