Is that built on a Ford F53 chassis? Lots of truck repair places will work on them. The trick is to find a place that has a long enough/tall enough bay. Also, some truck repair shops don't like to work on Class A motorhomes because they have to walk through the house to get to the drivers seat and owners can be picky about dirty shoes. Another possible place is a Ford commercial dealer. You can use this search form to find nearby ones.
CVC Consumer Site Once you've created a list, click on each individual shop and you'll get details including what type of vehicles they work on and how big their biggest bay is. Still best to call first since the vehicle types is not always accurate.