From: cd@notformail.com   
      
   On Tue, 7 Oct 2025 12:13:37 -0700, dplatt@coop.radagast.org (Dave   
   Platt) wrote:   
      
   >In article <21u9ekdg7tl0u7jgtiicc7563l70pagmlr@4ax.com>,   
   >Cursitor Doom   wrote:   
   >>Hi all,   
   >>   
   >>I've got this old Grundig radio made in 1972 and the main tuning cap   
   >>gets scratchy from time to time owing to a design defect where they've   
   >>put the moving contact at 90 degrees to the shaft so it runs in a   
   >>narrow slot, rather than the more common leaf spring contact. Over   
   >>time, this has worn and as it has, it doesn't self-correct for tension   
   >>like the leaf type does. So I've been using a switch cleaning   
   >>lubricant on it, which works great for about 6 weeks, but then it's   
   >>getting scratchy again. Is there something more permanent I can use to   
   >>maintain good contact? I'm thinking maybe copper grease like the stuff   
   >>they use on brake pads to stop squealing. Would that work? Switch   
   >>lubricant fluid is just not sludgy enough to stick around!   
   >   
   >Check out "NO-OX-ID A-Special" antioxidant grease - it's made   
   >specifically for this sort of purpose.   
      
   Thanks, Dave. I'll give it a shot.   
      
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