In his final “Kitchen Detective” newspaper column, Christopher Kimball signed off with some advice. He said that once you find a recipe that makes you happy, just stick with it. Don’t waste your time chasing down perfection. This sounded odd coming from a guy who built an empire on his own obsession with finding “The Best Recipes.” But even he could admit that, as the saying goes, better is the enemy of good. Since whole wheat sandwich bread is a character actor in a supporting role, a good loaf can range from dense to airy, dark to light, sweet to slightly bitter. There are plenty of recipes kicking around, and if you’ve found one…