I am having a problem with a bike I got new, I believe my rear hydraulic brake is leaking right where the line connects to the assembly, this is because I am constantly feeling the handle get closer to the grips and it is now touching the grip...I have also taken it in three times now to a dealer and had it fixed or so I thought to find It leaking again...I am looking for suggestions on how to use them because I used to use regular v brakes, is there any difference in the way they are to be used? or could it be something like a gasket leaking, because i don't believe they have ever been rebuilt that would change any components inside, or else just the bolt type thing on the top connection. Please help ons again it leaks.