I went ahead and checked the instruction manual for the MORryde RV Cargo Sliding Tray - 90" x 26" - 2 Way Slide # MR87FR and yes you are going to have to crawl into your cargo compartment to fully secure the tray to your toy hauler.
The good news is you don't have to move the entire tray assembly in and out of your trailer a bunch of times, just the mounting rails so it's much easier to manage. view full answer...
Usually when an AC unit is freezing up its because of inadequate airflow. This is usually from a dirty air filter or if too many vents or closed. Another problem can be a clogged up drain line. If the condensation can't drain it can cause an excess of moisture. Since this is happening with a new unit too my guess would be it's a clogged drainline. view full answer...