>>279906042
eventually the entire stock will be the new build of controllers if it isn't already, I imagine in some rare instances in places other than the east and west coast of america they might have stock on the older ones from returns or whatever, but everything is now sold out everywhere except japan (which gets stock to a physical store instead of shipped) All new controllers being made are the new ones, both right and left. 
The number of people doing RMA are probably less than you might think since people with no issues don't complain, but VRG are the hardest of the hardcore early users. Everyone with an index got it almost right at release. 
For sure it's an issue that pops up eventually for most people with gen 1 nucks, but it's highly unlikely anyone getting a index after march will have that issue. 
Can't know for sure.