Histogram adjustments do take some learning, mostly by seeing what-does-what. That's why it's best to experiment in a paint program because you see the graphs and the result-overlays and the eye-dropper values -- which all help develop intuitive operation. And it's probably better to stay with the controls-histogram than adjusting graph-points directly.

Your clips show you're on the track. Normally with that green-tinge, I'd say to gamma-down the GREEN channel. But if you're putting points on the graph, you must slide down each point in proportion to what a gamma curve would do (tedious and prone to errors).

Trying to see how easy it would be using the 2006 DVD release as a target, I discovered my standard easy-approach wasn't doing the job -- get one color right and other colors go wrong. I'd say this is Lucas Film's doing things like selective-area tinkering. That makes for more complex work.

So, I used the 2006 DVD only as a guide and adjusted the luminance first to match the range (does wonders for the picture) ...

and then corrected the saturation and hue for matching skin colors (ignoring what happens to other colors) ...

and that's it. The results actually look quite good across dissimilar shots. You can probably use this one setting for the entire movie (if such adjustments are readily available in VirtualDub):

VHS CAPTURE ADJUSTMENT 2006 DVD

Interesting to note that those other colors look quite natural against GL's post-production/release ceaseless tinkering to change the environment. *sigh* :)

BTW, if you can do that GREEN channel gamma, this would be your result (and better than my attempt, I might add):

VHS FILTERED + GREEN GAMMA=0.87