new pump

I’ve been jelq’ing for about 3 months and the wife has noticed a increasein length and girth, I’ve allways tried to please the women in my life, so when she mentioned the length if fine, about 8.25 erect and it hits her cervix and can be painful if we get carried away, but she could do with alittle more girth, about .5 to 1.0. I decided to start my execises, a gain of .5 in length was great with an increase of almost .25 in girth, I was blown away. I have modified my routine and some of the techniqes in the site I have actualy developed before I joined. The reason I’m writing is because I had reasoned pumping with jelq’ing could increase my gains if done together, again before reading any thing from this site. She was so excited by my gains she bought me a pump, damm what a woman, the pump seems to be well constructed with a ball pump and release valve but no gauge to set levels. Can I add a valve myself or is there a way to use it without overpumping.

ps can you add gith without a lot of length