Hey guys, I'm wondering if perhaps my head shape means I cannot get a proper seal on closed-back headphones. I was looking for a closed-back pair that could serve as a monitor while recording but could double as a personal listening pair as well. (Prefer flat sound signature, controlled and extended bass rather than boomy room bass, detail, soundstage if possible, etc., would rather not spend more than $200...). I tried a bunch of pairs at a local Guitar Center, and my favorite was the Sennheiser HD 380 Pro, so I bought it. However, it doesn't seal on my head because I have a very prominent jawline, and there's just a giant space where it doesn't seal under my ear. I was hoping perhaps the store-test-model was just weakened through use, but the new model has the same problem. Do you guys have any recommendations for me? Are there any closed headphones that would even work for me with my jawline issue? Do I just need to give up on closed-backs?