I'm planning on doing a backcountry hunt later this year. I have an MSR mini works EX filter system purchased in 2017. Hasn't been used since 2017 but only used it a few times to filter water from high elevation creeks. I can't find any way to contact MSR directly anymore. My question is if you think I should replace the filter itself to be safe or just maintenance it if appears to be in good condition. Just been in storage for eight years. Or maybe go for a better type of filter system? I see there are a few better options now. Thanks in advance.