My spongy base

Hi all!
I haven’t come across this in any other post (sorry if it’s been covered!), but when I am jelqing from the base of my penis, the tissue is very spongy, but about 3/4 of the way toward my glans, the tissue suddenly becomes much denser. I think this denser area is where my penis has greatest girth when erect.
What does this mean? Should I be doing something to make the base area denser or something? My routine is just dry jelqing and basic stretches at the minute.
I’m quite interested in clamping, but it worries me quite a bit as I don’t want discoloration, or to damage my penis.

My main goal is to gain flaccid length, and both flaccid and erect girth.

Cheers :D