Replace it with a nice new one from best buy or walmart. Not really hard to replace. Did mine last month while out camping. The new one is so far superior to the old piece of crud. As a benefit the fan is whisper quiet. Unlike the old ones screaming fan
Generally speaking motor homes are the most expensive form of RV. Least expensive of course would be a tent. What do you call expensive? The RV life is not cheap by any means. You have to decide what it is worth for you and your family to make lasting memories.
Likely you hqve a CONverter and not an INverter. Look for a metal cover, maybe under the refer. That should be the converter. Had one trailer ther the converter was on the floor off to one side after you opened a door under the refer. Most all trailers are wired in a daisy chain fashion. Power is fed from outlet to outlet. One you find the converter start atthe closest outlet and move around the trailer from there. When you find a dead outlet back up one and check the wiring connections.
395 to Alturus and head over to Klamth Falls, 97 north. Depending on where in Portland area either cut over to the valley on 58 or continue further and take 26. That is the route most locals used to take to Reno for gambling weekends as it is the fastest.
Tongue weight is determined by dropping the trailer with the tongue on the scales. You might be able to make some assumptions by subtracting truck only weight from
M truck hitched weight. Assuming everything else is the same.