I have not noticed my paint being milky as yet!! But then again working form dark to dark, have not had in the sunlight either. Only 67 miles on the bike, just received two weeks. Drove home and parked in garage.
This reminds me of a good frien of mine with the same situation with his Chevy truck. Truck under warranty, paint defective on rear quarter panel. He found with the dealer and GM for two years. Finally and only finally, until he got a lawyer and sued the dealer and GM for not honoring their warranty, was any resolution received. They (GM) finally in the end bought the truck back for what he paid and all lawyer fees. He the when and bought a Ford. No problems to date, and he drove the truck for two years.
I know we buys HD because it is in our blood. But with all these problems, everyone seems to be having, and the MOCO is not or does not want to do what is right, this may have to be considered. This apparently is the only thing they understand -- $$$$$$. Not customer service, to the people who are loyal to them.