Finally got around to using the starter to makes some bread. made pancakes twice with discard.
Made some sourdough crackers as well.
At start the two loaves on left were on top rack, one on right on the bottom.
At 10 minutes, swapped shelves and rotated, and placed temp probe in one on the bottom.
At the 20 minute mark, noticed single loaf on top[ was much browner. Put a probe in it and it was at 198f.
Removed it from oven. The two on the bottom took another 7 minutes to finish, but not as brown as the single one.
I guess I will need to swap and rotate every 5 minutes or so to get color even on all loaves.