Playing yesterday, was in the field for a long time and ended up with leaks on 2 of my mags. Both at the fill valve. I recently watched a video where a guy used special tools to remove the valves. He called these valve keys. I am wondering where I can find them. No where else on the mags has leaks and I'd prefer to not have to take apart the whole mag and potentially cause further leaks.
Link to video:
https://www.youtube.com/watch?v=ZJkwwJmvTnA