Old problem but new twist? Coolant loss

[mgtf1500]

I have a new Berg radiator -- WORKS GREAT -- New Head, New water pump. Any way the car runs great. However, it loses coolant a pint or so every 00 miles or so. No overheating seen nor is the fill line too high. I am assuming it is being burned through the head/block. How do I chase this down? Is it something i can live with? Just need some direction.