jaydee, I had *exactly* the same problem last year, and it turned out to be a hairy combination of poorly fitted boots that led to poor technique, which unfortunately gelled into poor habits --- pretty well what L7 is talking about.
I'm 5'0", and have really tiny feet, even for that height. However, I have well-developed calf muscles. Getting ski boots was a nightmare, especially since I had just started skiing and I didn't know how ski boots should feel. Everyone kept saying that they should be snug, and that that wouldn't be comfortable like street boots, but I was in *agony* after about 2 hours. A wonderful boot-fitter at Sun Peaks helped me fix the boots last year, but they didn't fit properly until the very last day we were skiing there.
The boots, besides constricting my calf so that the blood flow was actually stopping to my feet, tilted me far too forward. As L7 said, I was leaning back in my hips to compensate.
This problem was exacerbated because my ski instructors kept saying to "bend my knees". Well, I have *very* strong quads, and I dance a bit --- I can get into a pretty deep "plie" (or knee bend). I just kept dropping my weight farther and farther back, because I could. Disasterous, and *exhausting*.
The same boot-fitter who helped me with the ski boots was the guy who helped me begin to actually ski. He did two things which completely turned me around.
1. On a green slope, he got in front of me and just held my skis down so I wouldn't move. He lifted up the tips so that my skis were flat rather than on the slope. He told me to begin moving forward and back, and to stop when I thought I was perpendicular to the skis. I did this, and he said, "Come forward a bit. Keep going. Keep going. Okay. *Now* you're perpendicular to the skis." I couldn't believe it! My weight placement "felt" ridiculously forward. He then dropped my skis back to the slope, and I could feel for the first time where my weight should really be.
2. He said that instead of "bending my knees" (too general a direction for me) I should think about trying to touch my knees to my skis. That made me bend my knees keeping my weight forward rather than sitting back in the hips.
Sorry if these tips are too basic for you, but they worked miracles for me.
About a month later I was at Whistler (yes, last year was a good year for ski travel [img]smile.gif[/img] ), and in that ski week I finally managed to get my weight forward because (1) I finally "felt" what that meant! and (2) I wasn't bending with my butt behind my feet. Miracle of miracles -- quad burn gone. Poof!
There was a woman in my Ski Esprit class who used to be a professional ballet dancer, and she was skiing exactly the way I used to (weight backward, *deep* knee bend) on the first day. She was complaining of quad burn, too. She got her weight forward, and her quad burn went away, too. (She became much the best skier of our group by the last day of the class, btw.)