First off, sorry to hear about your problems. Secondly, take a deep breath. It sounds like all of the things you mentioned can be easily fixed.
I have owned seven rvs and not one didn't have problems right out of the factory. It is the nature of the beast, some brands worse than others.
I too learned the hard way to do a thorough PDI myself and go through every square inch of the rig before I sign the papers.
With my current rig, I found about 12 items that needed repairing before I would sign the papers and drive away. Most had to do with loose screws, poor for and finish and as bad as a leakimg back flush valve on the tank flusher.
I had them fix every item to my satisfaction before I drove away with it. Again, I had to learn the hard way as I have been in your shoes.
Rvs as a general rule are built poorly, no matter what brand. They build one in a day or two and it is all about spitting out units.
The manufacturers depend on the dealers to fix these items and do provide dealers with a per unit prep allowance. Most dealers pocket the money banking on buyers bringing them back so they can be reimbursed for warranty work.
It wasn't until I learned this dirty side of the business that I became so attentive to what I was buying.
Just make a list of things wrong and wait until you spends a few nights in it as you may find more items. Once you feel you have found the issues, schedule an appointment and plan on leaving the rig for a while. The dealer will have to get approval from the manufacturer before doing warranty work.
Keep your chin up. It will get better.
