Based from what I found out:
A: If you are referring to the quick disconnects on the ag unit, if you overly turn the aq unit to the side or up and down and so forth and put pressure on the connectors, it will leak. I would think that if the quick disconnectors are not straight in line, overtime it will leak. Best to keep the lines and quick dis- connectors straight and have no pressure on the quick disconnects.
A: I asked about hose lengths too. Some responded by saying that its better to have it shorter for better cooling, and it would also be better for the pump.