Dear James: Much of the drywall in my house is uneven and needs to be replaced. I plan to hang the drywall myself. Are there tools or fixtures that will make it easier for a beginner? —Noah L. Dear Noah: Hanging drywall is not as difficult as most people think it is. Apparently, the original installer of your existing drywall didn’t do a good job. It is difficult to repair drywall that was not installed properly, so your decision to just replace it is the correct one. Even if you are not experienced doing this, some minor imperfections won’t be extremely apparent. Most walls are painted with flat wall paint, making it difficult to see imperfections, especially at the joints. If you plan to paint some of the walls with semigloss paint, install drywall on those walls last so you are further into the learning curve. One fact in the …