I haven’t expiermentend with aiming the tension on the inner shaft too much Langemann, but I seem to be gaining some tunica gains from getting fatigue/soreness in the outer shaft/tunica. These gains seem to be a bit slower then the lig gains came when I was a newb. To get sorenes/fatigue for length gains in the outer shaft/tunica I do manual stretching, ADS for many hours, and some light jelqing for length with some rest.
I have expiermented with getting fatiguing/soreness in the inner shaft/tunica before using OTS hanging with a Wench and doing kegels (even manual stretching at high angles and thumb stretching and inverted V-Stretchs help to tire the inner shaft/tunica I believe currently) and I just didn’t feel like it was getting me anywhere as far as gains go, for some reason I feel better getting a nice fatigue in the outer shaft for gains. I don’t know time will tell for me if this works or not. If it doesn’t then it’s time to go to plan B and try to fatigue both the inner and outer tunica/shaft at the same time. Hopefully that won’t need for me to happen.
Also BTB jelqing might be good for you to get fatigue/soreness in the inner shaft/tunica for gains dude. BTB jelqing has been theorized by BIB and others to help convert BPFSL to BPEL gains I believe…
Other peoples replys here to your post should give you a better judgement on what you want to know. The info I gave you here should be of help though in some way or another. Peace.