ive only checked for leaks from cold start up for about 5 min, havent checked when fans kick in yet ect..
im going out now so will check these things when i get back
so the coolant isnt propoerly circulation yet.
you need to have a run get it up to temperature, then have a good look.
have the heaters on when you check also.
i assume you dont have any wet carpets.
Seeing it seems you have had work done in the area, check around the turbo.
But also check the lower radiator hose connection, this is where the drain plug is, this can leak as its just a single rubber ring seal.
Clearly the radiator itself may be leaking.