I am not at all comfortable with what you have posted here. It all seems upside down to me. If I walked into a PDI and found the rig dirty I would have ended the tour before it started. Your fuel tank would have been filled by a reputable dealer IMO.
About the steps. Take a Scotch Bright pad or some fine emery paper and polish the brass contacts located in the door hing jam area. This my solve that problem. I recently had to do this.
If you have the residential refrigerator set your inverter to on. This will keep power to the frig when you are not on shore power. I don't know if you have the generator Auto Start feature. If you do be certain to test it. Run all of your systems and be certain they ALL work. I hope your dealer will fix problems on his dime.
I have been using CRC Power Lube with PTFE:
CRC Power Lube Industrial High Performance Lubricant with PTFE, 16 oz. (Net weight: 11 oz) Aerosol Can, Light Amber/White: Power Tool Lubricants: Amazon.com: Industrial & Scientific
This is a dry lube but the Teflon (PTFE) protects and lubes the rack and pinion just fine.
Check your tires closely. They may have had tire dressing applied to make them look pretty. This could hide side wall cracking. Because Michelin has this problem (forever) I am going to Toyo tires. But, this is my preference for many reasons I consider important.
Does your rig use DEF? This is not a big deal but a pain to fill. The DEF box you can buy at Walmart is usually more expensive than at the truckers pump and is a stinky pain to use.
CAUTION: Do not try to drive with an empty DEF tank. Your power system will go into limp mode until you get some DEF back into the tank.
Things you probably already know: Get your coach weighed (each wheel and total) after you have loaded it for travel. Have full fuel tanks, diesel and propane, and 2/3 potable water when you go to the scales. Set your tire pressure according to the weight chart for the tire manufacturer. Always set the
axle psi per the heavy side. I strongly recommend a TPMS. This is no more than a early warning system that lets you know if a tire is failing. The temperature and pressure will be way out of line with the other tires. Believe me. You don't ever want to experience a blowout.


:nonono:
I have rambled enough here. I never did say
CONGRATULATIONS!!!! I hope you have many fun adventures in your new to you rig.
Happy trails,
Rick Y