I have a 2008 RT 210 p
It has peeling paint both on the top ,clear coat ( so do many otjers ) and back doors.
both thing happened this year I have ownes it for 3 years. it has 50k miles , I have waxed it twice a year since I have owned ,,,,?? maybe I should not have done that.
It has a Phantom / parasite battery drain ( this is VERY common) after aboit 10 days not used it will be below 12.0 v ,,,in the 11's ,,,,,, I park it outside in florida so, I use a 4 watt solar chaeger in the windshield to the Cig lighter, I also have a quick dfisconnect at the battery.
The shore power, upholstery and battery box are things that could go bad in 12 or so years or so
for me #4 " could be a problem", mold is hard to get rid of , on the other hand it is something we in Florida fight against ALL the time. So it might deend on how bad it is.
4) It had not been cleaned out inside and there was some evidence of mold.
One of your pluses is something I would look into carefully ,,, that is the 2" lot of RT owners have done the lift, but it has to be done right. . look around at old post about suspension on RT .. there are some VERY knowable people on this board (not me).
Last,,, if I were thinking of selling I would not sell for 42k ....
As far as I have read/researched RV have problems/quirks ... LOTS of systems LOTS to go wrong . as someone else said .... take a good look at you pricey items ...air, Frig,Generset. heat.Ect. and evrn if they are operating perfictly ,,, plan/know that you MAY have to replace some or all of them in the next few years.
Don't get discouraged .. the RV life is worth the pain ,,,at least for me
take care Michael