Adjustable gas block - problem solved.
The spring's job is to close the action. The gas block's job is to only allow enough gas flow to fully open the action.
Overgassed actions will often leave case head swipes on the brass - meaning the action is trying to open while the chamber pressure is still high, so there will be an ejector and/or extractor notch "swipe" or "smear" on the base.
A slightly stiffer spring won't usually fix an overgassed action. Sure, it stiffens it up a little, but resisting recoil/cycling is not the purpose of the spring, bolt and buffer mass and the gas block are what SHOULD set the action timing.
You might be experiencing that excessive sound simply because your rifle is now quiet enough to let you hear it. A loud rifle can hide a lot of action sounds.
