hello there, i have a selco beamsaw with quick releaseto take off the blades, my problem is that the bearings are gone in the part you take off before you take off the blade, i've replaced them twice but it seems the bearings are not up to the job my problem is i don't have the original bearings,someone told me the bearings have to be woodworking grade they are a trus bearing that i'm looking for .has anyone had this problem and how did you fix it thanks for all your replies