iPod 5.5 shutting off when headphones are plugged in
I just installed an iFlash Quad and 2000man battery into my 5.5 but when I plug in headphones the device cuts off and won't start up again unless I remove whatever's plugged into the 3.5mm port. I can sometimes get it to work, but then a light press on the right side of the front will make it shut off again.
I ordered a new headphone jack assembly. Is there something I'm missing? It behaves normally when I don't press that part, but jostling it will cause it to happen eventually. I reseated the ribbon cables multiple times.
Am I trying to cram too much into a thin case? I've seen others do it and more here.
Thanks for reading.