One final remark. In both the Glock 23 and 32, I suggest replacing the stock 18# spring with a 22# spring from Wolff (
http://www.gunsprings.com ) or ISMI (
http://www.ismi-springs.com ????).
Glock specifies the same spring weight for the Glock 32 and 23 as the Glock 19! You can reduce frame battering and felt recoil by using a heavier spring. 22# seems to work well for .40 and .357SIG.
I have had good luck with the Wolff uncaptured guiderod and spring. Wolff springs are the regular round wire-type and should be replaced every 2-5,000 rounds.
ISMI springs are the wound flat springs like the stock Glock spring. They should last 10,000's of rounds. The ISMI springs have a smaller inner diameter than the Wolff springs, but they are the same dimensions as the factory spring. As a result, you can install an ISMI spring on the factory plastic guiderod. IMSI also sells a captured and uncaptured guiderod.
I had bad luck with the captured guiderod assembly because the capture screw would hang up on the frame and prevent the slide from going into "full" battery. ISMI replaced it with a uncaptured rod which seems to work well.
Nowadays, on my Glock 23/32, I just use a 22# ISMI flat springs on the stock Glock guiderod.
My Glock 19 uses the stock recoil spring assembly, unless I want to experiment with spring weights, in which case I use a Wolff non-captured rod and Wolff springs.
-z