I don't understand folks hesitation with contacting rv mfg. factory reps.
Contact the rep.........
Then you get info directly from factory....not second/third/forth hand from dealership (tech/service writer/manager etc.)
Maybe dealership is giving you the straight skinny.....maybe they aren't....maybe they garbled info.
3 way flow of info.....you/rep/dealership then everybody is on same page.
It is your RV.....it is your problem cause nobody else has same level of interest regardless of their glad handing/smiling/head nodding.
Be pro-active if you want results.