Are you looking to change the characteristics or go back to factory spec?
If it's not obviously leaking there prolly fine
FastmOp , its a service situation . I have battled traction off the tbrake for 12 months and this is an item not touched . No they are not leaking by hand they are similar and adjust per dial .BUt as I noted these have been on for 12 years or there abouts so that would be 70'000 kilometres driving or more . So I am trying to remove varianbles , it cant help for a little effort
Tex