Try this:
- Equip a non upped Chung E garment.
- Equips ESL hat (it reduced DEX a bit, iirc)
Look for other stuff that reduce DEX, INT or LUK. Not sure if Quagmire would work on you once dueled and then leave duel afterwards. To be honest, havent' checked a scheme like that, but you might think on brewing at prontera south, bacon island or a place like that.
Cast Marionette on you in such situation. Regear yourself with shiny stuff and get some extra stats.
Get a pet. Taini is +2 DEX, but even a poring with +1 LUK, or those that combine DEX and INT will do. Not sure if there was a pet for +2 LUK.