The only thing I would do(after no more than 5000 rounds) is get a steel guide rod and Wolf mainspring.
The G22 was my first, also.Just keep it clean andit will work reliably forever.
I thought you were going to say clean it.
Any of y'all run FrogLube in your Glock? I saw some for sale over the weekend, but hesitated to try it out, because of the price.
You may want to do some research before going with FrogLube. I have no experience with it but some shooters had issues with it.