First of all........ Welcome to the Forum!!!!
I really like the 31RKS layout! We have a 2007 25RKS and soon realized that we would like something a little bigger.
We are seriously looking at the 31RKS and the 322FKS.
Right now the 322FKS is leading the way.
There are a few threads here that you should review about "PDI's" or "Walk Through's" if you are not familiar with new delivery.
Simply search "PDI" or "Walk through" and you will find a few results that will give you a good idea what to look for during your inspection.
You already took the TT out and have a good idea of what needs to be reviewed/fixed, so I hope all goes well with the rest of your camping trips and your new TT!!!!!