Me again the nooby guy learning, Tried searching for another topic but could not find one. If I make a horizontal Cylinder Reservoir I have two questions why do most reservoirs say the top is only to fill and not use as a Input Flow, also do people have experience for best way to bleed air from the cylinder, without much lifting due to me planning hardline. I could plan to make the Reservoir at a 5deg incline to bleed towards the fill port but level would be more my goal.