On the top end there is only 2 places that would contribute to oil consumption.
First is a bad crankcase breather and the oil is going into the intake and burned in the combustion chamber. There is not any visible sign of a crankcase breather problem except excessive oil in the air cleaner and throttle body.
The second is bad valve seals which allow the oil to drain directly into the combustion chambers to be burned. If the valve seals are bad you will see blue smoke on cold engine start up.
The only other thing that causes oil consumption is a piston ring problem.
As far as the top end noise you would have to pull the rocker covers and inspect the top end components.
If the repair tech at the dealer is any good he should find the problem.
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08 FLTR candy red sunglo,with 2015 103 HO, V&H Dresser Duals with Monster Rounds, Power Vision tuner, Willy Shiny Wheels and Forks and a bunch of other stuff.