I have one of these for my AG setup and was wondering what others thought about these pumps? I have a lot of messing around to do with mine in order to get it to pump the wort from one keggle to another. I have a specifically hard time when all the kegs are about equal height with one another. What I normally have to do is drop the keg that I am transferring the liquid to, down on the ground and then get the pump as low as I can also. The pump has a hard time pumping the liquid up and over into the keg. Just wondering if this is just mine or others have problems like this also?