Occasional grind going into reverse

[DrBacon]

So here's a fun one, this has only happened a couple times so far but recently I've had a grind sometimes going into reverse. Yes, obviously my foot is to the floor on the clutch pedal, not like I'm speed shifting into reverse. I've always had odd issues with this transmission that I'm seriously tempted to just buy a brand new oem unit but I figured if this could be potentially anything else it doesn't hurt to ask.

Yes, I have basically every clutch component aftermarket. Zspeed clutch, flywheel, cmak. Rjm clutch pedal. Transmission fluid changed about 10k miles ago. Clutch fluid flushed and changed about 5k miles ago.