Recoil Spring Feel

[The_Shadow]

Did you notice the Wolff spring has a smaller diameter at one end?  That end needs to go to the back end of the recoil rod as it helps center the spring on the rod.  Being your adapter has no recess for the larger end of the spring, I can see where it would present an issue for reassembly.  In that case it would be nice to see both ends of the spring made smaller to keep it centered as well.

I did see an article where the opening of Gen4 slide had gotten bent due to it being milled larger in diameter, not sure what caused it to bend...too much recoil or excessive recoil spring pressure or both.  If I recall I saw one was cracked as well.
I looked for the pictures but have not come across them.

Just be careful and keep a close look out for damages that might occur.