You can have it replaned or have the fretboard replaced. If you don't know a competent luthier, maybe call EBMM CS...if they can't do it, they may be able to refer you to someone.
Depending on where you're located, I would say wait until the fall/winter. Humidity always causes my basses to need adjustments. When the humidity drops and the the wood shrinks a little, there might be no buzz at all.
looks like a well played neck. I would try adjusting the neck then saddles to see if buzz goes away but really your best bet is to just get the board plained. good luthiers are hard to come by but I know 2 good ones in Atlanta but I bet you'll be able to find a good one near you.
and just from experience, if you're willing to shell the money, once the board is plained, you might want to consider getting it epoxied for more durability if you play it a lot with round wounds. My '89 stingray is epoxied and i like it a ton more than other fretless basses i've had without epoxy.
If it were cost effective, ebony wood would be the way to go on fretless fingerboard in my opinion
Please edit the frowny face and the title if possible...it makes it sound like a new bass has a problem instead of a 16 year old workhorse....start with the truss rod before you sdjust the saddles thanks!