I bought this CZ Rami BD a few months ago.

It will eat up FMJ rounds without issue. I've tried a few different defense loads and I get a Failure to Feed similar to the below link (note: not my gun, just found a link online that was exact same issue).
Failure to Feed
I haven't taken the time to polish the feed ramp yet, as I've been doing a lot of research on the issues. So far I've found the below possible fixes.
I can keep trying different defense loads, but I'd rather fix the issues with the gun if it's an issue. Others with similar issues have sent their Rami back to CZ for repairs without any improvement.
I'm also leaning towards doing the CGW Rami Defensive Carry Package and polishing the internals while installing the kit.
Does anybody else have a Rami that they've had similar issues with?
Edit: When I do encounter a FTF, it's solved quickly by grabbing the slide and pulling back and then releasing. The round chambers at that point.

It will eat up FMJ rounds without issue. I've tried a few different defense loads and I get a Failure to Feed similar to the below link (note: not my gun, just found a link online that was exact same issue).
Failure to Feed
I haven't taken the time to polish the feed ramp yet, as I've been doing a lot of research on the issues. So far I've found the below possible fixes.
- Polish feed ramp
- Upgrade magazine springs to Wolf springs
- Upgrade recoil spring to CGW spring (spring needs replaced every 1000 rounds anyway, so this will happen either way).
I can keep trying different defense loads, but I'd rather fix the issues with the gun if it's an issue. Others with similar issues have sent their Rami back to CZ for repairs without any improvement.
I'm also leaning towards doing the CGW Rami Defensive Carry Package and polishing the internals while installing the kit.
Does anybody else have a Rami that they've had similar issues with?
Edit: When I do encounter a FTF, it's solved quickly by grabbing the slide and pulling back and then releasing. The round chambers at that point.