So, if you're having CCT noise and you suspect your spring just isn't creating enough pressure to push the worm gear out enough, here's a quick fix for you as long as your worm gear is working properly. This will also allow you to adjust the CCT without removing the clutch cable or bracket.
Remove the pan head hex bolt from the CCT with your toolkit hex key.
After removing the bolt, make sure you don't lose the black o-ring around the bottom.
Get a 90 degree ratcheting screwdriver, and a 3/16" flathead bit. Got this for $3 at Harbor Freight.
Insert the bit into the CCT bolt hole and rotate it until it slides into the worm gear slot.
Set the screwdriver to lefty-losey/turn counter clockwise, and slide it over the bit. You may have to rotate the screwdriver a bit before it will slide on.
Give it a couple of clicks until you're feeling tension. Do NOT overtighten this. Play it safe if you're unsure.
Replace in reverse order and test. If it needs a little more tension, remove the bolt and give it another click or two. Do this incrementally.
If your worm gear isn't locking into position, instead of the hex cap bolt, replace that with an M6x1.00 bolt, nut, and washer. You snug the bolt down until it bottoms out after setting the CCT tension, then snug up the nut to lock it in place. You can't tighten the bolt or you'll rotate the worm gear clockwise with the tension, thereby backing it out again. The object here is to keep the worm gear immovable, not to actually put tension on it.