What concerns me more than the body movement with Yoda, which I noticed but didnt really care about, is the scaling of the floating X-Wing as it advances towards Luke. It just seems that the scaling is off.

Compare the size of the front landing gear as it advances towards Luke (using Luke as a size guide) and then as it actually lands in the close up shot next to Luke.

Seems as if the X-Wing is smaller as it advances and then is its normal size as it lands, again using Luke as a guide.

Either that or Ive just had to much eggnog tonite.

as far as the ground issue with the dipping, I noticed that one leaf waaaay in the back blew to the left when we all know the wind was blowing to the right, just saying. ;-P