It matters. If your gun is fairly new, the springs ought to be fine. (The 5K rounds-fired/5yrs-of-use recommendation for replacement.)
However, depending on how long ago it may have been produced (before being sold), the followers may, or may not, be the most current ones. You can tell if there's a "40" on top of them.
How experienced are you with shooting plastic-framed guns (or Sig's) that have the slide stop levers located above the shooter's thumb?
It's not uncommon for a shooter's thumb to sometimes interfere with the freedom of movement of a slide stop lever due to grip technique. Especially during recoil.
This usually happens when actually shooting the gun, but I've seen some people exhibit problems even when manually running the slide on an empty mag (by hand). Just depends whether they position their thumb on top (or beside) the slide stop lever.
If you actually detail-stripped the frame, hopefully you made sure that the slide stop lever spring was captured by the raised spots under the rear of the locking block. The picture below shows a couple of variations (.40 & .45 locking blocks) in the small raised "nubs" underneath the left side of the rear of the block, where the end of the lever's spring rests between them.
Also, when you removed the mag springs, were either of them bent or tweaked?
One of the standard armorer bench checks is for the magazine's follower to lock-back the slide (on each EMPTY mag, in an EMPTY gun) when the slide is briskly retracted and released (by hand).