It does and will try that thank you.Does the shower have a handset? If so, take it off and run it with an open hose.
Then check if the pump is still leaking.
If it doesn't then the shower head is creating resistance to cause the pump to leak.
Replace all o rings with new on the pump inlets and outlets.
Your pump may also be limescaled up inside which again increases resistance just enough to find weak spots in the pipework.
New o rings are a good move for starters and cheap.
Just need to find the right size O-rings now
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