Cool, thanks.
Btw (maybe you have seen this already) I found a post on Reddit where the solution mentioned by this guy kind of makes sense in my head. But I know the type 89 mag housing is also notoriously tight compared to MWS.
"Hi I know this post was like a month ago and you might have already fixed this but I had the exact same issue and fixed it myself. I replaced nozzles 2 times at this point, and replacing it didn’t fix the problem. Last time a nozzle broke after I shot like 30 rounds. As far as I know, this problem happens when a feeding lip is slightly tilted downward in the magazine housing. This is caused by a worn off trigger guard thingie that is working as a guide for the back side of magazine, in my case at least. I superglued a thin plastic sheet in the back side of the magazine housing and this problem is no more."