I've tried to move and replace the grills, reservoirs and pipes. Tried putting in thatch instead of wood. Same results over and over. There is one work around, but it is not great. If I place a reservoir on non-water rich ground so that the reservoir is not irrigated, then connecting a grill works as expected. Of course this sucks b/c you're having to move water to fill reservoir... At least it makes the water tank for the grill 12300.