Spacers for Kamoer Pumps?

[tmccaff]

I got the mastertronic and I heard the kamoer has a design flaw and use spacers to fix it. Any idea where I can buy these? I was looking at a 3D printer but no idea what to buy.. Did Kamoer ever address this?

 

[Peace River]

It looks like you have found the main thread about the topic - https://www.reef2reef.com/threads/p...moer-pumpheads-including-mastertronic.927120/

Good luck with your search!