Rattle in right driver of Sennheiser HD 595, please help

[SrRealist]

hiya fellas. ive had my 595s for a while now and they've had some issues. at one point i lost nearly all sound from them, discovered my ground was disconnected and was able to fix that. the only lingering problem is a rattle coming from within the right driver. ive taken the right cup apart and found no hair in the driver, tried blowing gently on it to try and pop out a potential crease in the diaphram, and no luck. really a bummer at this point, anyone got an idea?

edit: it should be noted that the rattle is only present during really low bass notes, and this is all the more reason id like them fixed.. i listen to a lot of Dubstep.

[Voltron]

Hiya fella. See if Senn will replace the driver for you or get another pair.

[Dusty Chalk]

I concur. Sounds 'blown'.

[Voltron]

Too much o' da dubstep, mon.

[The Monkey]

Obvious question, but is the driver seated properly? If so, sounds like a new driver for you. Although I recall some strategies mentioned when I had a similar driver issue, so others may chime in here.

[SrRealist]

im pretty certain the driver is sitting just fine. in fact, when seperated from the cup, i can clearly hear the rattle from within the driver. luckily these cans arent too difficult to disassemble and everything goes back together real snug.