Magazine and slide question

[dasadab]

I have a Glock 32. With my 4 factory magazines, about 80% of the time the slide will not stay back after the last round is fired. I know I am not thumbing the slide release accidently because the same thing will happen if you manually pull back the slide with an empty magazine. I tried a Glock 23 magazine and the slide will stay locked back if I cycle the slide manually. BTW, the Glock 32 magazine followers are numbered with a "1" and I think this is the most current follower. I disassembled the .357 and the .40 mags and the followers look identical, but...the .40 cal follower is a little taller causing it to push up the slide release lever better than the .357 follower. All 4 .357 mags have this "shorter" follower. I have heard that the G32 and G23 mags are identical, but mine are not. Anybody know if:
1. There is a more recent .357 follower than the number 1?
2. Whether the .357 and the .40 magazines are supposed to be exactly identical?
I would prefer to have mags labeled for the .357 that work. Thanks. Dean

[cmzneb]

I just compared some brand new G32 mags with some fairly new G23 mags-

The G32 mags have #1 on the follower and the G23 mags have #5 on the follower. Best I can tell, the Followers are Identical, other than being marked .40 or .357

[dasadab]

Thanks for the reply, I really appreciate it. On my mags, the followers look identical, but the 40cal is definately taller, i.e. it sticks out higher above the magazine edge. Here is the latest as of this afternoon.

Just got back from the range. Here is what happened. First, I used the 40cal barrel in the G32 with the 40cal mags. Shot 200 rounds--worked perfectly. Next, I tried a .357 mag loaded with 40cal--fed fine, but slide did not lock back.
Next, I put the stock .357 barrel in the G32 and tried the .40cal mags loaded with .357. I got at least one failure to feed per mag. The bullet would stick on the barrel feed ramp. If I pulled the slide back again, it would feed. Therefore, the 40cal mags definately don't feed reliably with .357.
Next, I tried the .357 mags and everything fed fine, but the slide would not lock back after final round fired. I could try stronger springs in the .357 mags, but I am not sure this will help because even if I manually cycle the slide with an empty .357 magazine, the slide will not lock to the rear.
So, it appears I have reliable 40cal model 32, but an unreliable .357 cal Mod. 32.
Any comments appreciated. Dean