Mr. Millimeter
I dropped the seat on my Shogun touring bike about 2 mm. and tipped up the point of the seat just slightly. I was amazed at the difference! Just a slight adjustment of the seat and I went from struggling to floating through my pedal stroke. I knew my seat was a little too high because I was having trouble with my pedal stroke at higher pedal cadences. Plus, when I rode the bike for several days in a row, I felt tight in my sides and noticed my pelvis was rocking a bit.I only had to drop the seat the smallest amount to slip into the zone. Right after a short ride with the new seat height, though, I felt like I was pushing down on the handlebars, and slipping off the front of the seat, although my leg extension was much more comfortable. So, I tipped the seat point up a millimeter or two, and that did the trick.
I rode another 10 miles or so, up some gnarly hills, and what an incredible difference! I could maintain a much higher cadence -- 90+ rpm compared to 75 or so at the higher seat height. Plus, I wasn't bearing down on the handlebars any more, a result of the new seat angle. Rotating the seat up slightly also made it easier for me to slip back behind the seat post on the saddle, which seems to make it easer to push hard, especially on the uphills.