Hi, here is your setup guide
http://www.google.cz/search?gcx=w&so...s+setup+manual
Click the first item for Gary Willis setup manual
I have Warwick Corvette 5 fretless too. Great bass, the low B is outstanding. Neck profile is slimmer on their fretless models than on fretted so it's great too.
I use DR Sunbeams 45 on it and love the sound, wonderful mwaah..
I would suggest you first take off the flatwounds, because they usually have higher tension and therefore might bow your neck. If you put there DR Sunbeams the action will go lower and you quite probably won't need to do any setup.
Don't worry about the deterioration of the fingerboard by rounds vs. flats. The sound is worth it and unless you play it constantly several hours a day, the ebony fingerboard will last very very long time.
Here is how the Warwick Corvette 5 sounds with DR Sunbeams:
Gamosvar - Úvod - Bandzone.cz | Kytary.cz - hlavnÃ* partner
(one of my projects..)