If Tiffin can strong arm dealers into doing warrantee work Thor can especially considering they are much larger than Tiffin. All it takes is for high level management to call the dealers owner and tell them if they don't service Thor product no matter where the person purchased it then they will no longer be a Thor dealer then follow through if they didn't.
Many dealers would be in serious trouble if Thor dropped them and if they did it to just a few dealers you'll see most every other dealer fall in line and stop this crap. But until more manufactures police their dealers not much will change.
Thor on the other hand needs to do a better job with their QC. Bring in a few really good QC engineers and they will find the reasons things are failing. It's not just inspections but finding where the issues are in the first place so they don't happen during the build. This is what good QC engineers do for a company which is why they are worth their weight in gold.
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