I have an Opportunity to get this track saw for $425. I have looked at these several times. My main reason for wanting one is to straight line rough lumber. I have several festool tools, so I know they are very good tools. It's a demo at a local store. It has been used only a couple of times. There is no warranty with this saw and it concerns me. Are there any known issues with saw that would warrant me to pay the extra and get a new saw with a warranty? Or, do I pull the trigger and get this one?