Tdi dual mass flywheel differences

[iownanaudiboii69]

Im changing my flywheel on my car, I have reached a bit of a road block in that the old and new (luk is old and sachs is new) in which they are different heights.

Is this normal or is the new one wrong.

Its a 2010 A3 with a cffb engine and 6 speed gearbox

Thanks