Chris, your saddle is definitely not positioned properly. You should not notice the need to push
yourself back on the saddle, nor should you notice yourself sliding off of the front.
Saddle positioning is an art, both for how to set it up, and for how to sit on it. I find that the
perfect position for me is a level saddle, which sits slightly higher in the tail section, and one
for which my sit bones rest on the backs of the saddle and thats about the only body to saddle
contact that is made. This puts the pressure on my bones, not my delicate tissues, and it sits me
upright for proper peddling, not wasting energy and effort trying to stay properly positioned so my
crotch doesn't start to hurt. With such a saddle position, I am able to scooch forward if needed for
short powerful seated climbing, or move even farther backward for long uphills. The neutral position
allows me such comfort as to ride with no hands for miles, even climbing.
I would not suggest making dramatic changes to your saddle position,
1/2" can drastically affect performance. I can notice a change in as little as 1/16". But if moving
it a 1/2" to start and then continuing to move it till you find the right spot works, go for it.
I would think though that lowering it is the proper first step. Then level it so from a horizontal,
the saddle "looks right". I'd then try to move the saddle to where your comfy sitting on it with the
only contact points being your sit bones and the back of the saddle. I'd then move the post up till
you find your pedalling strength begins to deteriorate, then moving it back down just a touch.
Good luck. Check the other saddle thread currently active. It takes years sometimes to find the
right saddle and position.