Hi Zerofade.
Look at the down place of your slide ,under the firing pin hole.
Maybe it drugs the bullet when it comes back and the bullet hits the frond side of the grip.This can't leave the magazine drop free.
Manolis
Next time tak a look at https://mountainclub.gr/κατάστημα/παπουτσια/la-sportiva-uragano-gtx-trail-running-μποτακια-ανδρικα/
La sportiva : great traction , comfortable, waterproof , light weight, Gore-Tex .
But a litlle expencive.
Manolis
I have never see a CM to have problems with factory or good reloaded ammo, major or minor , cleand or dirty.
The problem begins with the reloads (OAL, PROFILE, DIAMETR ) .
Manolis
There will be people who buy it.
This is correct.
That horse is dead already.
Why don't you wait to see when it will be in the market what is the price and the response from the people.
Manolis
Another useful tool for removing the checkering is this one :
https://www.ebay.co.uk/itm/New-SMALL-MINI-ELECTRIC-OPERATED-BANDFILE-POWER-BELT-SANDER-SANDING-GRINDER-FILE-/222208879777
With some good emery clothes you can make exellent job.
Manolis
1. Unscrew a little the holding screw.Maybe is overtired and doesn't leave the spring to work.
2. Check the mag release for burrs.
3. Remove spring. Put the screw in the semicircle that is in top of the spring and use pliers to gently compress spring to narrow the gap between the top of legs.
Repeat as necessary to get the release you want. Be careful don't over do it
.