I've been meaning to replace the housing of my Lumia 1020, which is why I purchased a replacement shell and a bunch of tools from China via eBay. I also have a .pdf of the disassembly manual and have read it several times. Problem is, I am not sure if it is mandatory to remove and replace all the gaskets and grounding pads from the other parts of the phone. Is it possible to leave them on as I only intend to replace my dented housing?