You’re overthinking it, It’s a penis not a pvc pipe.
You can enlarge the head and even out the taper…..Just takes work and shorter range of motion in your jelqs/dry jelqs. I’ve enlarged my head a great deal just squeezing behind it and holding the pressure for a little while before doing my other girth work. It’s not rocket science, it’s closer to the pre-exaust technique in bodybuilding.
Bpel: 8", Bpeg: 6", Mbeg: 5.75", Meg: 5.5", Aheg: 5.25", Heg: 4.5" - 11/18/11
Bpel: 8", Bpeg: 6", Mbeg: 5.875", Meg: 5.63", Aheg: 5.38", Heg: 4.75" - 5/18/12
Bpel:+1/4", Bpeg:6", Mbeg: 5.875", Meg:+1/16", Aheg: +1/16", Heg: +1/16" - 6/18/12