Hi Squirt Inducer,
Curious, are you just twisting as much as you can (without pain) and pulling down ? hard to make out what else you're doing. Also is a suffice technique to get length gains ?
SIM is gone on a vacation from the forum but I will try to guide you. One twist is the minimum if you can go further. It all depends how much you can handle.
You should feel fatigue and some soreness but never pain.
In the video you can see exactly what to do. He starts with one twist and then begins as a second twist as his body relaxes.