Funny isn't it how my 05 with 30,000 miles had hardly any wear and you had all that wear with the same mileage and oil.
Riding habits i bet are a lot of it and where your located Heat Humidty etc etc .. and i also wonder Crank Runout ?? Can it Accelerate the Wear on the Primary side maybe give a whip sawing effect ? or not enough oil coating the chain to keep it from shreading adjusters etc etc etc
Ain't that the truth!go to the H.D. Dealer and order parts that are a week to a 2 weeks out when they should have them sitting on their shelf. If I want a $40 t-shirt made in China, they got plenty....:small3d023: