X1D II with XCD 90mm leaf-shutter

[JMGUTIERREZFOTOGRAFIA]

Hello everyone, Has anyone experienced that during a photoshoot, the leaf-shutter fails?
I'm having intermittent problems, sometimes it fails and the photo is overexposed, it's as if the shutter is slowed down,I'm starting to be afraid that the lens will break in the middle of a photoshoot, unfortunately I live in a country without official technical service and with difficulty sending the lens by mail, thank you!

[Photon42]

I had a complete shutter failure on a 3.5/30. I continued (outside) with E-shutter and sent it in afterwards. If I remember correctly, Hasselblad claims the shutter is good for one million clicks. Or the end of the warranty period - whatever comes first 
From your description of the issue, you seem to be confident it is not the aperture blade closing too slowly. In that case, as an immediate measure, you could shot wide open, if the subject permits.