Adjusting picture on Philco Predicta

[ISawItOnTV]

I'm attempting to adjust the picture on my Predicta and need some pointers on where to start. Basically, all I have is this pattern off the Disney WOW disc, and a screwdriver. As you can see, the squares on the left of the screen are not uniform with those on the right. I've made adjustments, but I seem to be making matters worse (since I took this pic).

The inner pot controls are:
1. Vertical Linearity
2. Height
3. Horizontal Range
4. Width pot (located at rear chassis)

And, there's the picture tube adjustments for centering.

So, what is the best order in making these adjustments?