Per a few reviews, some were using the Brainwavz HM5 Sheepskin Angled earpads as replacements for the stock Fostex TH-610 ones. After I ordered all the parts and started the swap, I was surprised to find out the HM5 pads are oval whereas the Fostex ones are round. I guess they knew what they are talking about. After using my TH-610s for two weeks, I received my new earpads and slipped them on. They are awful: a complete loss of low-end and most mids are missing. I can hear the drum pedal strike the kick drum's skin, but that's about all I hear. I slipped on the original Fostex pads and got back all my sound! I tried a 2nd time and made extra sure it was sealed. I even attempted to bend the plastic ring inwards, towards the headphones to provide extra pressure onto the ear cup. Exact same results. I'm confused. I thought these pads were to enhance the sound, not kill it. If I press the cups hard onto my head, only some of the sound returns. This tells me it isn't a sealing issue. Please help! These ear pads feel so good and i can wear them all day, where the stock pads give my jawbone a bit of soreness after a few hours.