I also had the problem of water dripping onto my left pant leg. It also ran over the speedometer and the tachometer, and the water destroyed the circuit board responsible for the interior lighting twice.
It took a long time to find the place where the water was coming in. The water was entering the interior via the windshield wiper shafts. The seals were not working properly.
Are you absolutely sure that it is entering under the windshield?

Clemens

PlusFour Red Baron MY 2022