I have played with the Rim-X quite a bit since the failures at the NRL-22 match. If you go too slow with the bolt the round can get up under (not forward or behind), the extractor, then it might pop behind it, but also might pop in front of it as the bolt continues forward. If you run the bolt reasonably quickly, it never happens. I also bought a second ten round mag and it seems slightly less prone to this. It can still happen though. It's very slick, but has to be run. It took me a bit to figure out what the Vudoo action liked as well, although it can run slow, no issues. Looking forward to the next match and trying it again.
I am spoiled by my centerfire Impact action which runs no matter how you run it, and is slick as snot on top of that.