matriarch patch point broken?

Hi all

I cant patch to input on my right attenuator. The mini jack simply cant go into the hole, like something is blocking.

Is this something i can fix myself or do i need to send it to repair? i got 1
Last time i got it to repair it took 3 months, so i dont want to send it away again if nessesary.

Maybe someone here has some knowledge on the patch points

Sebastian