Note that if you've used another name, even something like putting a space in, (like "GUEST, Richie") you may have to try variations. The Address bar will show you the seach string for the search by clicking your name in a thread, and you can copy that and "edit" the name at the end to get other variations.

The only thread I find in posts by GUEST,Richie that contains "mule" - in recent time is This One

John