I'm sure all those things have been tried. In fact I know the oil thing was a problem for a number of years.
The trouble with the Mag. Moss Act is Harley has pretty deep pockets, lawyers, & can out wait you while they have your motorcycle waiting to be repaired. Or you can go ahead & pay then take them to court.....
You agree to the trailer hitch thing when you sign the warranty agreement.
They say it voids the drive train warranty, but if you have an electrical short in the lighting, they could tie things like that to the hitch also.
Many places aren't chicken $h*t about it, but just get around some rep trying to impress their bosses & watch !

 

While you try to prove it you ride just sits or you pay out of pocket then sue out of your pocket and hope in the next 5 years you win. A little bit of a long read but here is a post about my dads dance with Harley Davidson a Dealer owner warranty and the MM act https://www.hdforums.com/forum/tri-g...or-though.html. When they tell you that you are more than welcome to persue any leagal means you desire they do so from a pretty sound position.

 

Something I saw at the Grand Canyon a few years ago. Hubby and Wife riding 2 up on a Tri-Glide pulling a trailer. They were bitching a blue streak about the lack of power of their '10 Tri-Glide. Riding at 7,000 feet, I would guess He topped 300 lbs, and She wasn't too far behind. Trailers empty don't weigh that much, but they do when filled. Most dealers can't authorize major repairs, they need an OK from MoCo

 

I was actually kidding about the original post where he mentioned his 96cc engine. He actually meant 96 cid. Quite a difference.

 

A 2010 with the 32 tooth sprocket and a couple beefers on board while pulling a trailer, I can feel its pain.

 

Jim, I am heading back your way this coming spring. I will give you a shout. Jim

 

To be sure, give me notice. I'll block time and show you some of the greatest riding in the east.
Ride on!