When I bought my 2002 Monaco Windsor 40PBT MH a few months ago it needed new wiper blades. The ones that were on there were the one-piece curved blades and the wiper arms did not put enough pressure on them to keep them flat against the windshield across the length of the blade, resulting in a wide streak that didn't get wiped!
I had trouble finding 28" blades that would fit my wiper arms. Finally I went to O'Reilly's Auto parts and they were able to find my MH in their database to get the correct part number. They said the one-piece curved blades should never have been put on there, and that their blades were exact replacements for the original blades that came on the MH. The correct replacement is a Trico 67-321, definitely not cheap at $39.00 each, but they fit and worked perfectly! This is a popular brand that should be available at just about any auto parts store. O'Reilly's had to order them but they were there the next day.
I thought maybe others may have had this same problem and might be able to use this information.
Joe & Annette
Sometimes I sits and thinks, sometimes I just sits.....
2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD