SRAM hydraulics gaining and loosing pressure?

andork123 Posts: 6
edited April 2018 in Workshop

So I am having to send my SRAM break back and looking to go armed with the most info possible.

the break needed bleeding on the bike straight out of the box which I got done, less than 100 miles later it had completely stoped working again, so contacted the supplier of the bike. Since doing so it has gained pressure again, but this seems to fluctuate from day to day from being half decent to none existent.

Along with this the lever it's self is floppy and rattly which could be the cause?

Because it's quite unpredictable I don't want them to try it and think it's fine, when sometimes it's not.

Is this a common problem with SRAM?