@demosthenes9
Awesome SSPs Jules. I recently picked up a Caliente insert and am interested in the mods you did on yours.
First mod is to fabricate a charcoal fence to prevent coals from rolling off the grate.
Coal fence is fabricated out of 2 large stainless steamer baskets. I just cut it out and joined it together with nuts n bolts. The fence is then secured to the grate using a bracket . It's about 2 1/2" high. The height of the fence will limit how high you can raise the coals. Anything between 1 1/2"-3" should be ok. It you want to raise the coals closer to the food grate, then just cut off a notch where it lines up with the horizontal rod but i don't think it's really necessary.
Whenever it calls for, i use a poortex with varying diameter sizes instead of spreading the coals.
This mod is only necessary if you'll be using the stacker on grill with a table. Shortening the shaft of the crank handle will allow you to position it anywhere. I just cut the shaft and added extra counterweight to compensate for the shorter length.