flats for the bongo!
roundwounds for the fretless!
eb customer support:
Telephone: +1 866-823-2255
Click here for an image!
less relief / flatter = lower action
more relief / bow = higher action
do NOT use cheap tools to adjust with. they break and scrape up your bass!
if you have a 100th namm sr4: the truss works the other way around on those!
i have no affiliation with eb other than i love their basses