It is my understanding to utilize the fulcrum, you will need the point on the fulcrum that your shaft will lay to be above the exit point of the penis. Not sure what your fulcrum looks like but based on what I am envisioning, yours may not be succeeding. I would be glad to provide link describing how to build a RSDT fulcrum, it is a double fulcrum. It took me a few builds before I got something just right. Each time I thought I was on track, then reviewed how it is to work and expectations and went for a rebuild. The height of my fulcrum to where the V groove is for which I lay my penis is a bit over 6” high on my fulcrum. By having the fulcrum higher then your exit point and then have the hanger laying on the other side, you create an arch. The arch is the fulcrum point one. The hanger lays on the other side on the bottom corner and has the ability to rock forward creating the second fulcrum. Setup correctly, you should start pointing straight forward. As the tissues begin to stretch, the hanger will begin to point downward.
Don’t know if you will be adverse to hearing about how I understand and experience my fulcrum. But perhaps it will provide food for thought.