currently going through a similar thing with central coast Harley in NSW want 2700 to fix its a joke. and Harley Australia just don't answer calls and don't reply to numerous emails.
I have a 2016 fxfd fat bob 12 months old with 15000km. at 14000km I had the 110 stage 3 kit installed which has 12months warranty, after breaking bike in per the technicians instructions I had the service done after 1000kms. at this stage there was no oil loss before the service. The following 3 rides a ticking noise was coming from the engine after the 3rd ride it was a lot louder I checked the oil level to find there was no oil on the dipstick, at this stage I called central coast Harley they came and picked the bike up. a week later they said they topped the oil up and rode the bike all good to go. I insisted it be looked in to for damage. after insisting I was told the crank is not true most likely out from factory and will be covered under warranty but the new stage kit has a scor in the cylinder and they are saying due to bike abuse and I lost 1 litre of oil in 3 rides due to this score, Central coast Harley are saying rider I abuse where I believe it was not filled correctly at service and that's why it has scored the cylinder. currently going through fair trading for advice.