Audiomoth filter - Wind noise

Hi,

I use an Audiomoth 1.2.0 with an external mic (2 Primo EM272 enclosed in a soundtrap with a big windshield) for recording nocturnal migration calls of birds. I often have problems with the wind noise producing very low sounds which make the recordings saturate (vertical white bands). Although the Audiomoth's high-pass filter option works a bit, I find it lacking, especially compared to the same option found in the Wildlife Acoustics SM4s I use professionally. For the same wind intensity, the SM4 microphones with a small windscreen + the 200Hz high-pass filter on an SM4 hardly saturate, whereas the EM272 with a significant windscreen system (homemade Baby Ball Gag + good windscreen) + the 1000Hz high-pass filter Audiomoth saturates a lot. I don't know if it would be possible to manage the intensity of the filter to make it more powerful? Or should I set it lower to concentrate the filter on very low frequencies? (I really don't know how a live filter works sorry).

Thanks a lot !

Paul