sydarm leaking out of bottom of valve

[SuiciDal Sn Y p ER]

ok guys i broke another mag, i have a pretty major leak on the bottom of my sydarm valve and well... how do i fix it? i believe the leak is comming from the 2 holes in the rear of the valve where it sais "oil" ...and the leak started when i was tinkering with the velocity

[AGDlover]

sounds like a piston oring to me or reg seat