Foreskin gliding issue

 I dont have any difficulty retracting the foreskin. But, once the foreskin is retracted, the issue is that it is difficult to get back over the head of the penis. Its not uncomfortably tight, its just that it kind of gets trapped behind the corona of the glans. To my understanding (and correct me if Im wrong) the foreskin should be able to easily glide forward and backwards over the head of the penis. 







For some reason, the foreskin on the left side of the penis is significantly tighter than the foreskin on the right (could be because of masturbating with the left hand)

It isnt impossible to get the foreskin back over the head of the penis. If I pull down on the shaft/foreskin, all the way back, the foreskin kind of unfolds so that the entire foreskin looks similar to the right-hand side of the penis in the first image, above. 

However, if I get more aroused or close to organism, it becomes really difficult to move the foreskin at all, let alone get it back over the head (maybe because the penis is more swollen and the skin therefore becomes more taut). 

I know I could get by without doing anything (as I have for most of my life), but it is really frustrating as I cant really use the foreskin once erect. 

I thought maybe a way of fixing it would be to use the flesh tunnels mentioned on here. I bought a few of those, but Im not sure if they would help or loosen up the particular part of the foreskin that needs it. However, in all honesty, despite having one, I dont really understand how the foreskin works, so thought I would consult you guys. Is there any particular way I could address this problem and get the foreskin to be more loose or otherwise movable? 

Source: http://www.network54.com/Forum/244184/thread/1383299404/last-1383535568/Foreskin+gliding+issue+%28pics+included%29 November 2013