One of the best and easiest way to improve a saw is to get better blades..... but as was stated the blade needs to be aligned to the table (miter slot) and if it an older saw the bearings can be worn giving you less then perfect results.
It is also importain to use the right blades for the job. A rip blade for ripping, a cross cutting blade, and plywood blade are good first picks. A combo blade is handy for general purpose cutting and ruff cutting.......
If you don't know how to check for blade to table alignment let us know it is simple to check and while I can't tell you how to adjust the saw I bet someone here can.
Ed
It is also importain to use the right blades for the job. A rip blade for ripping, a cross cutting blade, and plywood blade are good first picks. A combo blade is handy for general purpose cutting and ruff cutting.......
If you don't know how to check for blade to table alignment let us know it is simple to check and while I can't tell you how to adjust the saw I bet someone here can.
Ed