Hey Johnny. I was able to get my zippers to work on my sleeping bag and I'll bring both the layers to this upcoming thing. I only brought one sleeping bag layer the last time. I believe my bag is one of those military bags where the lesser amount of clothes you wear, the warmer you'll be. The first night I slept in all my gear and I was freezing but the second night i didn't sleep in my jacket and was more comfortable. I believe I will also buy a better sleeping pad. Do you think I should buy a base layer or thermal layer as well? I don't know if there is a difference between the two. Will this layer prevent my sleeping bag from keeping me warm at night or should I buy them for the day time and take them off at night. Just generally how helpful are they in keeping you warm/are you bringing a layer? Thanks in advance man