carb setup help needed

[DreamZx93]

Ive got a 2001 RM125. I just tore my carb apart and its got a 32.5 slo jet a 430 main and the needle is set on the top. I recently bought this bike and this set up sounds weird...Why would you do somin like that? Right now she is runnin rich as hell and wont idle...I live in North Carolina...Its about avg 40-45 degrees here winter long. Maybe 50% humidity and im at about 2000-2500 feet....Anyone have some words of wisdom as to what i should run jet wise.
MODS (if it matters):Bills pipe: pipe, silencer, and cylinder. pro factory piston, and a shaved head.
Thanx

 

[Wizard]

Drop down to a 27.5 on the pilot and a 400 on the main. Needle clip in 2nd position (2nd from the top). Air screw 2 turns out. There is an idle screw on the carb (phillips head with lock nut. turn it counterclockwise to get it to idle). Adjust it so bike will idle. Let me know how it works out.