Three of the four eccentric bushings of the infeed table need adjustment to make it level with the rest of the jointer. The eccentric bushings are pretty much stuck. I thinking I should dismantle the infeed table so there is no table shaft running through the middle. But even after doing that they are still stuck. Any ideas about how to get them out? Is there a tool to use to turn them? I have ground down a chisel but it still is rounding out the grooves on the bushings and they still don't budge. I am thinking of hammering them out and replacing but I don't see any replacements on this web site. It is part 98.