Never seen this on a MK2

[akdeepdiver]

I was asked to look at a Scubapro Mk2 that the customer said had a constant "Leak". I disassembled it and take a look at the HP Seat end of the piston. Anybody ever seen this happen before? What could cause it to split like this?

 

[ajduplessis]

Abuse during previous attempted service, not sure what else. This is a first. How old is that MK

 

[axxel57]

Someone didn't know how to get the HP seat out.....

 

[akdeepdiver]

The reg is only a few years old by my estimate. Although not in the picture, the seat was still in the piston when I opened up the reg. It was severely deformed though. I did not get any pictures of it because the seat was too small for my phone to focus on properly.