I'm trying to set up the LG now; started sat and still fussing with it. It was the only one available at the feed store.
I needed to calibrate the thermometer; which means buying other quality thermometers (medical)and setting them in warm water about 100 degrees and seeing shich ones match, or course none matched.
Putting it together was easy. Lid fits easily onto the bottom.And plug in. Needed to supply my own surge protector to even out the electical supply's effect on the machines temperature.
Created my own heat sinks. 4 mason jars filled with water. TO make up for the lack of egg numbers; LG holds it's temperatures better when is is full.
Allows for a turner; or by hand, which I am doing as TUrkey eggs cannot fit using the turner.
Setting it up has proven a bit difficult to stabilize the temperature. The thermometers are all over the place. It has it's warm and cooler spots ( still air) and requires the eggs be rotated from the middle to the outer edges.
Be sure to put it on a level surface as the water rings are very shallow and overflow easily and the water drips out the vent holes onto the floor.
Must put on solid surface, no toweling underneath that will block vent holes.
Still air LG needs a stable room temperature; a narrow margin, like 65-72 degrees; a fan operated one has a much wider tolerance, can't remember specifically, about 15-20 degree range. If using a turner, do not put an egg in hole next to motor. (Applies to all incubators using a turner)
This is what I know so far. I found the instruction booklet on line; perhaps you can read the manuals for several brands and see what clues you can glean there.
THe LG has been more difficult to set up than I thought ( did a boat load of reading to prep myself) and it has no humidity guage; will make my own wet bulb thermometer and candle for accuracy. (Find a good diagram showing the increasing air cell size and candle to verify progress of your own eggs--this is what I plan to do.)
Hope this helps; many people have good results using the LG, others do not. It is about patience and a good set up initially according to ChooksChick.
Hope others will post other models.