There's some good banjo setup sites, these and others from Deering, Nechville, frets.com, Warren Yates on youtube:

http://en.pruchabanjos.cz/uploads/ho...your-banjo.pdf

https://www.stellingbanjo.com/blog/s...set-up-system/

https://creekdontrise.com/tabs_instr...ring_banjo.htm

You want to do adjusts:
- tension the head evenly, if you can borrow a drum dial from a banjo or drummist, that helps a lot
- connect the lag bolts or dowel stick so neck and pot are securely joined, don't overtighten nuts on lag bolts tho
- correct height bridge and tailpiece

If you have questions you can PM me, or ask on that, y'know, banjo forum and you'll get *lots* of advice