I still have two packs left from the 3-pack of springs I bought from Sig a few months back. The 938 is my summer carry gun and it’ll be put away soon until next summer. If Sig is backlogged let me know and I’ll send you one. (Recoil and firing pin springs).
When I first got mine in 2017 it would drop the mag after every round when using 7-round mags. Emailed Sig and they sent me a new mag catch no charge. No problems since. The only issue I have with it is occasionally the hammer will not return to full cock and that has only happened with my mild reloads (which run flawlessly in all 7 of my other 9mm guns, including 3 Lugers). I have had no FTE’s with the 938.
But yes, try replacing those springs and see what happens. For some reason this gun has a short recoil spring lifespan.