more:
it's funny because yesterday my Glock was working perfectly with all the magazines, after I swapped all the internals for others and then back to original.
The things I changed from the original G26 are:
-metal slide
-the springs and rods for heavier slides just fucked the whole thing up and now it's back to stock
-high flow rocket valve (apparently has no effect whatsoever)
-high flow valves on 6 magazines, the seventh with original valve developping exactly the same recoil and working better than with a high flow.
after testing ,re-testing where everything was fine, it sat overnight in its case, magazines were refilled this morning just in case, and re-tested: half of them don't work properly and I get the 'chambered but not cocked' effect again.
Of course all internals are fine.
The hammer bar is a bit loose, even swapped with a brand new one...
so after fiddling a little bit more, I got to the conclusion that the proper tool to make a KSC working properly is a Gandalf
or if he's not available, probably a Mandrake can do: