Fretless Help

[Bass_Machine]

I got my first fretless yesterday and It seems playability is a little worse today, after putting on my flatwounds. I think some of the problem may be with the action, I would like a nice low action for speed and but I don't want to choke the notes. What sorta string height would you guys recommend, and how would I be measuring this?

[JAL]

The reason the action has changes is probably the difference in string tension and/or gauge. This is fixed by: adjusting the trussrod to the tolerance suggested by the bass maker, however, their specs hardly ever deal with fretless. I prefer my trussy nearly flat, with a little less than a credit card of relief at the 8th fret (holding first and last "frets" down). For the string height, go to the bass makers standard measurement (they should tell you how much and were to measure and with what), and lower bit by bit until the sound is achieved.
Another note; if they are flats, the mwah will be a lil less...
Hope i helped, and good luck. :-)