My coach has a very low hot water flow from all of the faucets and shower  I have already done the following but no change  

Made sure both outside shower knobs were OFF

Made sure both low-point drains were closed

Made sure WH bypass valve under Master bath sink was set to normal

Checked water filter for flow by removing element then checking flow. No difference

Emptied and flushed hot water heater. Crystal clear water

Does anyone have other ideas?