I have a 2015 Canyon Star with an on demand hot water heater. I have come to the conclusion that most of the problems with the hot water have been lack of sufficient water flow. We have cleaned and changed all filters multiple times with no improvement. Unfortunately, unless the campground has high water pressure we also have what I would consider insufficient flow/pressure. Has anybody else run into this, if so, what was your solution? My next question would be, is there an upgraded water pump that could be installed? Thanks in advance.