have you tried a different brand of steel strings? and have you tried different plectrums?(thats assuming your playing it in accoustic mode).
If your playing it through an amp, then chances are your pickup is near the bridge so you'll get a twangier sound. play around with your EQ settings or get an accoustic amp/PA system to play through
Putting the PRO and FAN in PROFANITY
-Agile Intrepid 8 String
-Kramer Striker 7 string FR
-B.C.Rich Afterburner SE Warlock w/ Seymour Duncan Blackouts
-Bassmaster 200W amp