Vanquishers shouldn't require high strap pressure to seal, if they are, you might need to adjust the nose piece or you might have a face shape that doesn't work well with them.

The vanquishers don’t need a ton of pressure, but they do need more than the Aqua Spheres IME. They also have a smaller, firmer gasket; and a stiffer strap, so I tend to feel more pressure.

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ECMGN Therapy Silicon Valley:
Depression, Neurocognitive problems, Dementias (Testing and Evaluation), Trauma and PTSD, Traumatic Brain Injury (TBI)

I just throw on a pair of readers until the marks fade. Works out well as I have to wear contacts when I swim anyway.