If you want 155s with the lifter plate, they're here:
http://www.sierrasnowboard.com/Palmer-P02-Freecarve-with-CP13-Lifter-Plate-Skis.asp
Sierra doesn't have any other size left, but there was a pair of 163 on ebay recently.
I'm not much of a skier, only did two days this year, so I can't give much technique advice. I don't even know if I'm doing it right, but whenever I ski I basically try to do the same things that I do on my alpine snowboard and it seems to work ok.
Yeah Bola, the skis say "made in Austria" on them, so they're obviously not built by Kessler. They seem well made though. Does Palmer have its own factory? Or are they made by a big OEM like Elan or Pale?