Building a new tripod is fairly simple, and almost any effort will be an improvement. The eyepieces supplied with these scopes are generally of poor quality and far too high a power. For example, a 6mm eyepiece in a 900mm telescope gives 150x magnification. However, the maximum usable power for any telescope is about 50x per inch of aperture. For a 60mm refractor, this is about 120x.
Any higher power gives a dim, blurred, useless mess.
Replacing the supplied eyepeices with better Plossl or Orthoscopic designs will give you a noticable improvement. The selection of quality eyepieces in this size is somewhat limited - one of the few companies with a good selection is Orion Telescope and Binocular Center . The last problem common to these telescopes is also the easiest to fix. The objective is supposed to be somewhat loose. When the the cell is tightened down, it puts strain on the objective lens, causing distorted images.