the mityvac works fabulously well in curve correction (not serious curve). my penis has a slight annoying left curve towards the right. the sad thing is months ago i thought in order to correct the curve, i gotta twist the mityvac to the left to create a slight right curve towards the left when I pumped. to my surprise today when I did that, I felt a stretch on the left side of my penis. turns out, if I wanna create a slight right curve, all I gotta do is to just twist the mityvac to the right a bit, & I get to stretch the right side of my penis pretty well. now i'm finally making progress after months of unnecessarily growing my left curve LOL