i got a BNIB 2.0 and it leaks from the back cap !!! wow. i took it to my local shop and he put another luxe bolt in from the one on display and that took away the leak. He then went on to replace orings on my bolt and that did nothing turns out the bolt cap latch was machined wrong.
the hole where the latch pin goes in ( has two small orings ) was machined wrong and every time that pin is moved it cuts the orings.
1x2.5 mm id
^ thats the oring im talking about