Replacing AEA (0.22) Mags with CARM

I do like my AEA 0.22 Challenger Standard Air Rifle (long/wood stock) for the money. My first PCP.
However I consider the 0.22 Mags to be weak if not outright defective...
I purchased the CARM magazine for the Air Avenger and was able to adopt it (Darko calls it a Franken-mag :) ) to my rifle using only basic tools (fine sandpaper, knife, and a file). What I did was more touch and feel than engineering as I was prepared to do.
No formula to give, but for bolt to cycle smoothly I had to open up the barrel side pellet hole just a bit. I simply re-used the broken AEA clear plastic cover plate as the spacer, yes, I could have turned out something better on my CNC, but only after hours of measuring, drawing, hold-down, tools and so on - and then like to need to do 'file to fit' anyway.
Have tested now with all my pellets and slugs and no problems here.
I do like the CARM design better, and I'm now okay until Darko comes up with a product offering, if he does. Bug him, maybe he will do it sooner?
Pictures attached

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