1/4 inch gain, but feel limited

Hey, I’ve been a member for a few years, not much of a poster.

After an initial 1/2 inch gain, I’ve been 5.5 inch for a long time. Finally began PE again and after consistent work, I’ve gained another 1/4 inch, maybe a bit less. The thing is, because of a lower body injury that limits blood flow and limits cardio work, a gain in 10-15 lbs of muscle, and some PE gains; I feel like I don’t have enough blood for my unit to be 100% hard, no matter the visual and/or physical stimulus.

So my concerns are:
EQ, should I concern myself, if I’m making steady gains? Most of my work is hanging anyways.
Blood volume, is it a legit issue?

Not getting exactly your question, but maybe it is just me. If you can gain 10+ lbs of muscle, sure you have enough blood flow to make your penis hard. If you are having gains, so where’s the problem?