Now this is no thread to bash the special effects of the OT. But just to somewhat point out the inconsistencies for the sake of.
I noticed that when Leia is shooting the Stormtroopers on the bridge up above them the sound effect is that of a gun from a western. Plus if you notice at the end of the first scene of Obi and Dart dueling, Obi does this swirling action with his lightsaber and the blade seems to disappear!!! Plus the point where Luke shoots the controls to the blast door that blocks off Vader from coming through, his lightsaber blade is more of the whiteish blue that his original was that Luke was carrying!! List more if you gotem!!!