Well, I may have leveled off. After running pump 7x24 for over a week and my SWCG at 10, I've been able to "make" a little chlorine..

For those of you keeping count:

Day 1: TC: 25, CC: 0
Day 2: TC: 18, CC: 0
Day 3: TC: 12.5, CC: 0
Day 4: TC: 8, CC: 0
Day 5: TC: 6.5, CC: 0
Day 6: TC: 5.5, CC: 0
Day 7: TC: 4, CC: 0
Day 8: TC: 4.5, CC: 0

I've now turned the SWCG down to 5 and am still leaving the pump run 7x24. If it does not drop significantly, I'll go ahead and put it back on my regular schedule of 12 hours to turn the pool over twice a day. I guess my lesson learned here is that these SWCG truly do trickle the chlorine in. I was used to throwing in a gallon of bleach and voila, my CL changed over night.