Suckit SM Dust Bristles are too soft, alternate bristle options?

I’m Running a 2hp dust collector system (harbor freight w/ cyclone), 4in hose to the Suckit SM w/ 4in adapter. The bristles are sucking right up into the dust boot, and I get a small % of the dust/chips flying all over.

Wondering if anyone has had luck replacing the bristles with something stiffer?

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I recall hearing the softer bristles were helpful during tool changes, as the amount of compression needed with long endmills created too much force and occasionally the ring would dislodge. I can imagine the power of your vacuum may require a stiffer bristle.

I have sourced brushes such as this on Mcmaster Carr - just make sure to match the dimensions of the brush band. From the pictures it looks to be ~ 4-5 mm x 4-5 mm.

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