bridge adjustment

Hi Guys, Im as you see new to the forum and recently got my first warwick. A corvette $$ 5 I traded against a sandberg... Shortly after that I bought a 2. one used. Its a Streamer 4 from 98. LX4 I think beause it is PJ but its not a flamed maple top and colour is some translucent black...

I recently purchased a warwick corvette standard fretless with flatwounds on it. The G string has poor intonation and tone--almost sounding slightly muted without sustain. Is there an adjustment I need to make at the bridge? It does not "fret" a note at the same position as the lower 3 strings...