changing my user name

Is it possible to change my user name? I tried to set up a new account but couldn't as the email address was the same?
1998 Kona Cindercone in singlespeed commute spec
2013 Cannondale Caadx 1x10
2004 Giant TCR
2013 Cannondale Caadx 1x10
2004 Giant TCR
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Product manager, Sports
2013 Cannondale Caadx 1x10
2004 Giant TCR
Product manager, Sports
2013 Cannondale Caadx 1x10
2004 Giant TCR
PM me what you would like it changed to and I will get it sorted.