Just an update that it worked. I created a 256x256 texture made up of 64x64 blocks of color (each color unique), with the name of each color block spelled out in text within the block, to tell up from down. I then applied this texture to the model and discovered the problem: all textures on half of the cylinder are reversed, as though through a mirror! So, I had to create a second texture for the cylinder with a reverse image. Once I did this, positioning the textures was easy!