Please correct me if I'm wrong, but it seems that a little unfamiliarity with these parts out back is making you a tad gunshy to tackle the job, which is understandable. I might suggest looking for someone, maybe a forum member or whoever nearby, who can assist you with this so it doesn't turn into one of those projects. Or, do what I do, lick the back of a poison toad, grab a wrench and have at it.