If your head and CS does not fill up when you get an erection than listen to this. I have been around for a while and always struggled with this problem. I posted a while back that I found the problem to be the skin on the shaft is too tight and not allowing proper inflation. I also posted and exercise to stretch the skin and it is good but it takes too long and isn't consistent enough of an exercise. I have found something better and it is pumping. It has done and continues to do wonders for me. Pump for a few months and then take a few days off. When you take the days off the fluid gets a chance to subside and the internal structures will be able to fill with more blood. This is how you will know that you are on the right path.