There is a pretty interesting video of someone explaining what he did on his JW-15 to make it cycle more smoothly, but alas, it's all French to me 
In particular, the between 4 minutes and 8 minutes
This guy also does one on getting the magazine to feed rounds more smoothly. Also very interesting.
The magazine one is easy enough to understand, but I'm hesitant to pull out the dremel before I attempt something on mine.
So if anyone can help out, it would be appreciated. The ultimate would be an english dubbed version.
In particular, the between 4 minutes and 8 minutes
This guy also does one on getting the magazine to feed rounds more smoothly. Also very interesting.
The magazine one is easy enough to understand, but I'm hesitant to pull out the dremel before I attempt something on mine.
So if anyone can help out, it would be appreciated. The ultimate would be an english dubbed version.