Blade deflected off a small work piece. Thereafter the work arbor seems bent. I am unable to square the blade to the table as there is an excursion and the bottom of the blade will not line up with the top. As the blade spins it wobbles and cuts a wider kerf. I tried a new blade and the problem remains the same. This is an Older Craftsman 12" single arm, dual yoke Model #113,29501 and I do not have an owners manual. Are there hidden adjustments that can be made? Can blade collars heal my saw or must I enter the woodworkers hall of shame? Please help with advice if you can.