Springs

[KMcCormick]

So I replaced the springs in my hex mags to 30rd springs and two of them would have failures to feed every few rounds at first, but after having run close to 300rds through them they function perfectly and I haven't had a failure to feed in in the last 800 or so rounds. Anyone else has a situation where the springs have a break in period? These two were the only ones that this happened with my other 5 or so mags functioned perfectly form the get go.