Im hoping you fine folks here could help me out. I just got my 870 "tactical" back from Remington and I have a question about the mag tube spring. The spring in question has always been a bit weak feeling, I forgot to bring this up to Remington, and I noticed that when you take off the screw cap the spring just barely sticks out of the tube. Is this normal? It doesn't seem to effect performance but I just want to replace it with a Wolff or scattergun tech extra power spring just to be sure. The 870 model is the one with the fixed 6 shot extended tube kind of like a mossy.