Helix not going in all the way

Hey everybody,
so I bought a Helix recently and I'm pretty excited about it. Results so far have been good (I had been using a Nexus Excel for several months before, so I wasn't completely new to the experience), but no super-o yet. What really has me wondering though, is whether or not I even have the helix propperly inserted. What I mean by this is that it doesn't go all the way in, but rather the bottom inch or so sticks out. It's kind of hard to describe, so I used the picture of the helix model description and added a black line to indicate how far it goes in. See the image here:

When the helix is inserted up to that point, the p-tab is touching my perineum and I actually have trouble pushing it in any further (plus, if i do, it pops out again right away, so there's no point in that). Now this may not even be a problem; the helix feels kinda good as it is, but I'm just wondering whether I'm not using it corretly, or it's not a good fit for my anatomy, or if this is how it is actually supposed to be.