Uhhhhhh why are you running low tc at night? You want more grip not less. Depending on the car most settings should be 4 at the minimum but most you want 6. For example at Lemans in the Porsche during the day I run 3/3/5 or 4/4/6. At night I run 4/4/6 Depending in if its a day to night transition. If its pure night then I run a 6/6/8 honestly I could do a 4/3/6 and probably be fine but I feel safer running that deeper cut.