Post a picture of the gear.
If I were to set the adjustable one at a fixed height I would open up the access to the gear pop the cables out, slide the shield where you want it, stuff gear cable gear with something to jam them, close the lid down on it.
Complete disassembly, cleaning, and lube can get an ailing unit going if it’s not too torn up.
I measured how much force it took to get block and cable to move. That included the block in the slider and the cable through tube to the gear.
18 pounds.
I noticed that after cleaning, there was still a fair amount of friction between the block and slider. Not a smooth friction but tight spots due to manufacturing tolerances in the slide.
I then sanded the plastic part to loosen it up in the slide. I would do this to a brand new unit if I ever buy one.
After SupraSabre finally stopped snagging these things off of eBay I was able to build up my supply.
After servicing, it took 9 pounds to get it to slide.
I do not rotate the chewed side of the cable away from the gear. I figure it is mostly the soft material that gets chewed not the metal. And I figure that the soft material, sliding against the tube, is what is pushing the cable against the gear for positive engagement.
