Since we're in the same local area, do as I did and hit the local Harbour Freight store and get a set of small files for $2.99.
The set includes a couple of round, half round, flat, "V" shaped, etc.
You will notice that on 90% of basses, the gap between the open strings and the first fret are way bigger that that of the fretted first notes of the string and their respective 2nd fret.
To fix this problem I use my round file with a slight taper the most since I can use the narrow tip to work the G slot and the wider middle of the file to work the E and B slots.
Simply file a bit and fit check periodically.
I go deep enough so that the distance between the bottom of the open E string and the F fret matches the distance between the fretted F and the F# fret.
This way you will not have to wrestle at fretting the first few notes at the end of the neck; the result will be more comfort at playing your low notes.
KT...