heatmor up and running finally

so glad to light the fire in the heatmor. was anxious for it to stat working for me. i have found out its alot different than my old lil house forced air, and i am trying to adjust to keep a good hot cool bed. any ideas or things u guys do to keep the bed of coa;s good i am open to. i have figured out it is best to load it in small stages...... or at least thats what it appears to be for me. seems to heat better that way.
thats for any input.