I flushed the coolant in a BMW 325i (e46) but I've found a small leak on the radiator, it's dripping from somewhere above the drain screw, probably the circled area.
The engine isn't overheating, I can even get LPG to turn on. The leak is really slow even under pressure but it's constant and keeps happening when the system is cold so it could turn into a mess.
Can I use something like rtv silicone to cake it on the connection or is this something dumb like a misaligned oring that might have moved?
I'm broke so I can't just buy a new radiator and I'd really like to avoid draining this coolant again.
This car is a manual if that means anything

Any beemerfags here? I'm 80% convinced that the small radiator leak is coming from the circled part or something near it. This is the radiator drain screw on the driver side, no it's not leaking but something above it is.
Any idea how to fix this or plug/glue the leak somehow without telling me to take the car to a junkyard or replace the radiator?
For reference it's not pissing out fluid, but I can see a few drops under it, got no idea for how long this has been going on