2) You can science a hex, meaning put items you want to science in one hex. But first, in FOnline2238.cfg, make sure you have a binding for mass decraft which is ScienceAtHex=Ctrl K (You can set to whatever binding you want, mine is Ctrl K)
3) You don't need to pay. Although if you abandoned a caravan, killed the master, or have terrible reputation with a town, that caravan won't let you join it. I suggest go clearing your reputation at catheral for 5k caps, make sure to take an extra 5? for the entrance.
2 - I do it exactly like that, i read it on wiki, but it didnt work. I type "ScienceAtHex=Ctrl K" on file.
https://i.imgur.com/D54lxce.png
3 - I end caravan normally, from Hub to Junktown, no one dies, i get paid with exp and caps, then return to Hub to take another caravan, and caravan master say that he will not talk to ones like me or something like that and i need to pay 2.5k
There are a few different caravan companies operating. The one you just completed might be different company than the one you are trying to join. Its possible you failed a previous caravan with this certain company.
Also just to make sure. To use the ScienceAtHex shortcut you need to make a pile of the goods you want to science on the ground and then stand right on top of them to do it.
Sent from my SM-G920I using Tapatalk