This is a very common problem with the 1300, 1400,and 1500MKII series. There is a plastic part in the lift mechanism that breaks. I have owned 2 of these tables and both were broken. The overwhelming majority of the tables listed on Ebay have this problem. There are no repair parts available. Don Nebel
Long time ago you fixed the 1410. You don't remember how you did it? I mean did yo have to disassmble the entire Tonearm module-plate or could you fix the plastic piece while still at place in the the tonearm-assembly or did you have to remove the plastic piece from it?
Best regards and hope you're still active in this forum!