Since you fixed your problem can I hi-jack to see if I can get some help?

I took some flatwound strings off of my KSD Fretless j70 5 string. I left it without strings for a couple days it just sat in a stand. Then I put some new, different gauge, diff brand roundwounds on it and I got major buzz on the lowest fret-area (lined neck) so I loosened the trussrod qtr turn, still had buzz a day later. I turned the rod almost a full turn retuned, let it sit each time over 3 days or so. On the lower end the strings seem like they are stuck to the fingerboard, higher up the neck is only a bit less buzzy. Have a couple potential buyers for it, so need to try to get the buzz out so they can try it out first. Any ideas? Thanks.