misalligned shower door

I am looking at a 2011 Classic 30 where the shower and the commode are on opposite sides. On my inspection the shower door was jammed in the closed position and requires a significant amount or lifting at the handle side for it to open or close. My concern is that this misalignment may represent a more serious problem (such as floor or axle) . All other doors and drawers appear to be functioning properly. All help and advice:) welcomed. The trailer in General is in very good condition



Thanks,



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