I've had good luck with Matrix carbine tools:
https://www.matrixprecisionparts.com/m1-carbine-tools/
Thinking about your Ejection @45* may be a bound Ejector and Spring.... or worn out tip on it.
Extractor may have a chip or burr under the lip.
Stem plunger and spring could be bound up a bit with crud.
Either way a Bolt Tool is a must IMHO to break down, service/clean and re install.
Some will also call for a new Op Slide Main Spring.
I believe as long as you know you have a clean chamber, most times it's the Ejectors tip gone bad. Needing a upgrade to a newer/better style. Or chipped/burr under Extractor lip (can be lightly filed)
Late Op Slides can also help..... but I'll stop here.
Charlie-Painter777
P.S, Make sure you can push the tip of the Ejector in, and feel the spring push back out as you back off. Macro pic of bolt face would help.
PSS Good link here about Ejectors Etc..........(read All)......
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