Good advise on checking with a truck stop. Whenever we need parts, I give the folks at Total RV a call. Have your VIN handy and they can lookup the part. Then Total RV will check their inventory and if necessary call Thor. Either way, you can get the parts delivered quickly and efficiently. The only issue will be if you are traveling. But even that works out.
PS: here is there number (574) 262-4460.
US Army Retired - Loving The Road Trip