machtenx,
Fear not, I tend to twist in the BH myself. With a good strength erection, I angle to the right. Having a penis that is not straight might cause this (but then again, I suppose very few penises are 100% straight).
Anyway, I try to lay my penis in the BH where it is not rotated to either the left or right. Then tighten. And, if after tightening, I am not completely straight - I straighten myself manually.
I just grab the CC’s that are between the glans and the BH, and gently get myself to completely straight. Give it a try, along with the other advice, and see what works for you.
As far as the numbness, it could be conditioning. Either the wrap is too tight, the tissues are not yet adapted to the shaft compression while in the Hanger, or you may have been too aggressive with the amount of weight used.
Just take the time to experiment a bit and find what is comfortable. That may be easier said than done if you are the type that likes to ‘jump in with both feet’. I would know because I tend to do that. Just take it slow and everything should work out for you.
Also, don’t be afraid to ask questions, just as you have. There is a lot collective hanging experience in this forum and almost all are very helpful when they have the experience to point a guy in the right direction.