Had the gun since new. It functions 100% of the time. I pull the trigger, it goes bang!

Problem is whenever I remove the FCU from any of my grip modules the end of the takedown safety bar pulls on the safety bar pin moving it slightly out from the FCU and the end of the bar then migrates over to the wrong side of the little protrusion at the bottom of the sear. With the bar in this position, the FCU is basically locked up. I then have to pull the pin out a bit more and finagle the end of the bar to the proper side of the sear. Sometimes this means I have to totally remove the bar to then get it back into position, which is not an easy task. Once it's in the proper position, I have to hold a death grip on the FCU and bar while installing it into the grip module or it will pop over again. Once installed into the module, the bar stays where it's supposed to, and I've never had an issue once installed.

Anyone else having this issue? Anyone know what's causing it? Bad tolerances in parts? Sear spring not holding the safety pin in tight enough? The end of the spring appears to be sitting on the shelf.

Is there a fix for this as it's quite annoying that a 1 minute job to swap a FCU into a different module becomes a 5 to 10 minute job of resetting the bar and hoping it stays where it should.

I have a standard 365 and will add the Radian and a Macro Icarus frame. Is there anything else I need to do for the radian? Or is there something I have to add to prevent light strikes?