Washing machine will not drain all the water. If

there is always a little water left in the drum assembly when done pumping. however it is usually well below the level of the clothes basket/drum so that there is none contacting the clothes when at rest.
if you can actually visibly see water within the clothes basket/drum when the cycle is complete, then check below.
have you lengthened the drain hose beyond the standard length to reach to your taller than normal sewer/drain inlet??? if so then you're getting more water returning to the unit when the pump shuts off and if the extra hose is long enough then theres enough water returning to your tub so that the basket sits in water at rest..
if so you'll need to install a check valve to keep the additional water from going backwards into your unit. some of these units have one built into the drain hose where it connects to the pump.. i tried looking yours up via the model # listed on the 1st page but got nowhere with that number.

you could also have a restriction in your pump or drain assembly that may be slowing things down some.. can't be of more help without proper model # though..
hope this helps,
best of luck,
ttfn