My suggestion Richard Bridge is to try to get your money back. You were ripped off because you bought something without doing your homework first. I would strongly reccommend not fooling around with something you do not no anything about, especially things like truss rods. Try to sell it for whatever you can get for it. Go to a reputable store or on-line site like Elderly Instruments and buy something new for fairly cheap like a Deering Goodtime banjo. Take it out of the box, try to get it in tune and learn to play. Oval heads and high action, notwithstanding.