Hi again, yes the numbers are just a reference point. The bottom channel is three inches deep. If I have determined my outside, ground level will be say 3 ½ on my level stick, then I want the front part of my trenches to be set at a 6 ½. The top of the blocks should also be a 6 ½, no slope. When the brace assembly is set into the hole the front should read a 3 ½ and the back should read a 3 ½.

I do slope slightly, front to rear, only to ensure there are no high spots between the front of the channel and the block the rear is resting on. I am sorry I do not have photos to illustrate this. It is important that the front of the channel read the same as the rear.

As for packing, I use the dirt that came out of the trenches and foot stomp it. This is however Arizona, the instructions were written for all of the other areas where the soil is much different. This is where you need to decide if your soil will pack OK, or if screenings, or crusher run would work better.

I will check back as often as possible tomorrow, maybe be of some more help.

Dennis