Correct way to set rear angle?

Ive read all posts on setting the rear angle. I guess its time to weld my saddles tight and I want to make sure I have used the correct method to setting my angle. I know where I took the pictures I am a little on the strong side and have since moved it to be at 6* instead of 8*to 9* as it shows in my pics. But was wondering if this is a correct method for setting this.
I put my angle protractor on the front balancer and find the center line is at a strong 4* degrees. Then I put the protractor on the rear housing and also on the pinion yoke and have a negative 4* to 5* degrees. This means I have approx 8* to 9* degrees down? I have since moved the rear to be at about 2* to 1* down which should put me around 6* down which is where I think I want to be. Also I do have the weight sitting on the rear tires so the axle is not hanging. I also plan on adding supports on the back and front of saddles for extra strength. I just want to make sure this is correct before I weld!
Thanks
Rod

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