Same thing hear with my 2017 Axis. At first I was overwhemed by the amount of touching up and small fixes to be done (inside and outside). But let it soak in and just do one job at a time (for 52 weeks! LOL).
About two mo ago I purchsed one tube of black silicon and when all the way around and sealed up everything I could reach under the RV that looked like it needed to be sealed.
That only took about an hour so its not as bad as it looks time wise.
Then about a month later I purchaed some of that Flex seal and sprayed in the areas I could not reach before. I still have another can I will use on the notorious leaky tail lights and I might put a layer around the metal parts of the steps (Under coach) and the fenderwells to dampen more noise.
I am also on my 2nd pack of 100 count zip ties. The first round I took care of the real bad zip tie job under RV then the 2nd pack I used about 40 more to make it even better and I a few spares for furture projects and maintance.
Its not that bad of a job and it give you more confidence your RV will be Okay in rain storms.
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