Hey Aum,
I've found solar centering is not too helpful for me. I still get energy overload in the head when I do solar centering, but not quite as badly as if I was just doing the mantra regular style (where attention tends to naturally rest in the head or throat).
I'm resting attention way down below the plexus, almost inside the lower intestine. The attention seems to like to come inside the body, in the center of it, as opposed to resting attention on the outside.
It's hard to know what is really going on, on the energetic level. But overload in the head just spells headaches, irritability, and the overall intuitive sense is that there's no progress being made when all the energy is blocked up in the head. The experience has a shallow feeling. If I don't follow my intuition to lead the energy deep into the lower half of the torso, I just get into a weirdly detached state, with a headache, and eventually I lose interest in spiritual practice.
However, pulling the energy down, down, down, almost into the rectum, and the whole body resonates with a profound silence. In this way, the body is experienced more as an illusory appearance in consciousness, transparent, fluid, free, a little wave of bliss upon the ocean of bliss. It doesn't feel so much that "I am this heavy, solid entity". Feels more like light cotton wool like sensations passing in awareness. It's pretty hard to describe this feeling as you might imagine, and I'm probably not doing it justice. And I'm sure this just a somewhat personal thing. Everyone's network of obstructions is different.
At least that is how it has been recently. If I don't consciously direct the energy down out of the head, not much will be happening other than headaches that last for the entire day and being a little crabby with my girlfriend
![Blush [:I]](http://www.aypsite.com/plus-forum/Smileys/akyhne/icon_smile_blush.gif)