Today, I had to realize that draw length is much more important than drawing force. I have two SS, one is equipped with double Theraband Gold and the other only with a single layer of TBG. The first one, I am anchoring my draw somewhere at my cheek. The second one, I am drawing half butterfly. I made some test shots today... The single TBG with appx 15cm more draw has much more power. Conclusion, I need to change my shooting style asap, and switch the band configuration.
This Video could help you: