Hi Dan, i've had my roho since my accident four yrs ago and haven't had any problems other than i do my own transfers and some times i think my leg will drag on the valve stem and loosen it, and also i live in northern Arizona 5000ft elevation and drive to phoenix everyday for work and its alot lower so my cushion swells a bit so i just keep a eye on it. Good luck Ray c-5 c-6  

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