Just got a Sig P238. It shoots nice so I have no issues. I was looking for replacement recoil springs to have on hand. Seems the only place that carries them is Sig. I saw where they should be replaced every 1000 rounds. Sig sells a set of 3 recoil springs and 3 fire pin (striker) springs. Do both springs need changed at the same time? Has anyone found a different source for the recoil springs? Seems like they would be easier to find. Thanks!