Return pump losing power. Why ?

[Pod_01]

These look like very nice pumps ! Not sure I can find them in Canada though.

I had to look these up and the pump is offered by few manufacturers:

I realized my skimmer Royal Exclusive Bubble King uses the Red Dragon X.
These you can get in Canada, but I believe they only have 2 year warranty…

 

[KQuillan]

This alone scares me.