I'm possibly looking to bring in a good, used radial arm saw. How do I identify the good ones from the bad ones? I need this thing to really be dead nuts accurate and to stay that way. I know the old ones are good, but how old? Which ones? How do I identify them? What's a fair price? LOL...I know I know, but I'll take any help I can get.

I'm just spending too much time fiddling around with my "spare" contractor saw, currently relegated to some slotting operations. It seems like I'm always adjusting it. I really need a tool I can rely on. I've already wasted half a day trying to find the latest gremlin, not to mention all the time spent compensating for imperfect performance after the fact.

Thanks for any help