Hi, I have a Thermarest style self inflating sleeping pad which when I go from the flat lands where I live to the mountains where I recreate the pad expands so much due to the change in altitude that it is hard to get out of the stuff sack. Is there anything I can do to keep this from happening? I'm sure the stress it receives trying to get it out of the stuff sack can't be good for the pad. I suppose folding it up so the valve is accessible and can be opened and the pad compressed is one option.