Hi Luthnoob,
Sorry to say that I'm not sure about this kit.
Have you tried looking under the PBA-4 kit (or PBH-4 or maybe the GPB-4M)? This looks to be a bigger version of the PB-30R with a different body wood. I would expect that the soldering would be similar.
As far as the nut in concerned - I use a wooden block and a hammer - a gentle tap on the nut and it comes off. I usually use a few drops of CA glue to fix the nut on (But was told last week that I should not ! see below)
Quote from McCreed:
"As for nuts, Titebond works also but I prefer PVA. However I would advise against CA (sorry Trevor!).
If (more like when) the nut needs to be removed (for a refret; or repair etc) CA can result in tear out from the fret board or nut slot. PVA will come out cleanly and has a quicker set time when installing the nut."
Taken from
https://www.buildyourownguitar.com.a...410#post209410 - post 6.