I have a typically wired living room with all receptacles switchable on the top outlet. We are installing a large fish tank and decided to add GFCI protection. I'm trying to change a single duplex to a GFCI + single duplex. I would like this box for the fish tank to be hot at all times. I tied together the switchable lead in this box so everything downstream is still the same. I fed the hot circuit through the GFCI and jumped to the neighboring duplex. You see where this is going? I didn't until I flipped the light switch. Shared neutral returning current not seen leaving the GFCI. Is there a way around this without pulling wire? Or do I have to live with switchable top outlets in this box?