ARP-9 Drum Mag not feeding properly

[JSmith97]

Hi,

 

I've had the drum mag for a few months now but now it has stopped feeding properly, I can wind it up but then it will only feed around 3 or 4 bb's and then will have to be wound up again. Just wondering if anyone knows how to fix this? Looked inside just to see if there was anything blocking it, was all clean inside. Haven't fully taken apart the spring mechanism though. 

 

Any help would be appreciated! 

 

[Rdiwby]

Hi I know this is very old but if you or anyone is still having this issue I just made a quick video fixing mine let me know if this helps