Thanx for the feedback guys. Much appreciated in every way. After watching the videos from Friday I started thinking about trying a stretch movement with the smith machine, so I went in today to try it. I went with the super wide stance that Zedhed suggested for everything I'll post here. First the Smith machine stretch. I put the bar where I could grab it at the small of my back while standing. I put my hands snug on either side of me in order to make it impossible for my balance to sway out either way. I put a box below me as a target and worked it, going for a good stretch, but not forcing it as hard as I could have. This helped me develop a better feel for what good Squat form should be like. I also was able to follow some bullet points I took down from the video series Joe mentioned. From the top of my head to my feet, it has already had a huge impact on my form. Check it out. First the stretch.
MOV06462 - YouTube
After doing this for about 20 minutes, I went over to the cage. I set the box down, and put a thinner one on its end behind it, dead center, to use as a guide. With the empty bar I continued to work on form. I was stretching muscles I didn't know I had, and all with no lift under my heels!
MOV06464 - YouTube
So, I feel ready for tomorrow. When I first read Zedhed's recommendation to go down to 135 my immediate reaction was, "No fucking way!". But the fact of the matter is, you haven't steered me wrong yet, so I'll do it. Just another example of moving out of my comfort zone, which always leads to growth, no matter what it involves. Check out the videos and let me know what you think. I'll throw a couple up tomorrow with weight on the bar.
"The mighty sword of the Lotus Sutra must be wielded by one courageous in faith. Then one will be as strong as a demon armed with an iron staff."