I am glad to hear that you are not clamping any longer, I believe it to be far too risky. I think you should really stick with the basics for a week or two, just to reset your frame of mind and attack this from a different angle. If something is not working it's not working and you will need to change the practice being used. I say take it back to basics because this will help clear your mind and see a different way to approach.
As far as having ED, the exercises or tools being used will not cause this, over training will. If your EQ is low it means either you are fatigued or your pelvic floor muscles are weak and need to be strengthened. In 99% of the cases where impotence becomes an issue it is usually mental, physical impotence is extremely rare. For me, when I know it is a mental thing, I simply use Viagra and this solves the entire eq issue.
