We've been tuning down a half step for a while now. I'm exclusively flatwound. I have TIs on my main P-bass, Chromes on the backups, and Labella DTFs on my Bass VIs, all standard gauges. My guitarist/singer is wanting to go all the way down to D. My strings are already floppy and loose. I'm looking at moving up a gauge. Any recommendations/experiences anyone cares to share in re: to tuning down??