I recently bought a Remington 1100 Tac-2 shotgun. It is a 12-gauge with an 18-inch barrel and 6+1 capacity. As I've been trying it out with various loads, I've encountered a few malfunctions that have consisted of the next round only making it halfway out of the magazine tube. I figured I'd drop in a new follower and a Wolff spring, which I've seen recommended for this sort of issue. I have a Nordic Components follower, and the Wolff spring is a general-purpose, extra-power, 40-inch 12-gauge spring. My question is simply this--how long should the Wolff spring be trimmed to to fit my shotgun? Again, this is a 6+1 setup. Thanks in advance for any help!