I have had my TS2424 for 4 years and just now have discovered a possible problem with the arbor. I tried using my new Freud SD508 dado set at 1/4" setting which uses the two main blades and found the arbor has a recessed area between the flat surface and the threads. This is causing the right side dado blade to wobble (up and down). What I am trying to discribe is the arbor shaft goes from the a smooth surface to the threaded portion between the two areas there is a dip which allows the blade to sit slightly lower. Has anyone else experienced this?