Anyone have a recommendation for tracking down replacement hinges for a PL-530? I've seen one set on eBay for $150 (for the hinges alone! yikes!). What exactly is so proprietary on the hinges that stops someone from using just... like, generic hinges from a different table? I can't imagine anything but the spacing/placement of the screw holes lining up with the dust cover is an issue. Also, what tables shared hinges with the 530? I believe I've read that the 550 and 570 have the same hinges. Any others I should watch out for? And anybody have any suggestions on finding generic hinge/dust cover combos that I can just attach to the back of the plinth? All the aftermarket dust covers seem to have a "LOL good luck finding hinges" mentality.