Help Please! Sagging Front end, can't adjust Ride Height at all.

When installing the bars, the adjusters should be about as equal as you can get them by eye. Be sure the lower arms are as far down as possible when installing the bars. With the BBM in it I would run the adjusters as far down as I could, this would allow more adjustment once installed. I forget which bars I had in my big block A body, but I had them in and out multiple times to finally get the ride height I wanted. Also, don't forget if the bars have been out a considerable amount of time there will be some drooping as they have memory and return to the original state.