1. The low power is usually the O-Ring installation process of the piston ran away, just reinstall it.
2. For the 4 screws of the spring cover, you need to judge the tightness, and you can't tighten it too tightly. It is more appropriate to leave the groove 1mm.
This is because of the water pipe cutting tolerance.
*The updated gasket is a softer foam, and there will be no problem of over-tightening and damaging the structure.
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