My experience with shipping long fragile trim pieces has not been good as shippers tend to bend it when they stack it or move it! I recommend doing a few calls about the stuff you need and try to pick it up if practical?
Are you aware of the interactive parts drawings from Winnebago? I find them great to see drawings of exactly which piece and then easily get their part number. Seems to work better than me telling somebody over the phone! This should get you to the correct RV:
To to "exterior" section, then "panels and trim" to bring up a picture of the RV. Then use the cursor of the computer to hold to swing the view around, scroll wheel to zoom and then click on the exact item needed? Takes a bit of play to get there and get handy but one way to avoid confusion if you do the looking?
When you find the correct piece of trim, clicking it will them highlight it on the list at right. In this case it looks like they changed over the year, so you may also need to verify the build date of your RV?
That info should be on a label near the drivers left side and look at the SERIAL number 7th digit. NOT Vin number but serial!
That serial number idea should be explained in the owners manual as well. Normally 7th digit of 1 is early or 2 for later but there appears to be three different part numbers for some?
Sorry for the long "non-answer" but I like to sort my own troubles on the things that get so easy to mess up!
We can always use the part number and order but there seems lots of things to go wrong there! The little things seems to be harder than the big ones??
I know there are lots of RV shops in that area but no real time experience from me that counts . We did some Workamper trips around the area but I was so put off by what we saw, that we would not recommend going there and it was so long back that the whole group may have moved on by now!
Good luck on the chase!