On my Roadster but relevant to CX, I removed each screen upright screw, one at a time as differing lengths, and put blob of grease into hole then replaced to offset the likelihood of water getting in and lifting paint. These screws are notorious for seizing into frame so another reason for such.
Richard
2018 Roadster 3.7 1966 Land Rover S2a 88 2024 Royal Enfield Guerrilla 450 1945 Guzzi Airone