Ya I had to drill mine out immediately after my first 1.2 build, that hole is TINY, maybe I got a clone or mine was different, but mine was around the size of a sewing needle. Even at 1.2 the vape was pretty warm and not hitting effectively, Im pretty surprised you are at .5 with the stock airhole if it was the same as mine. My stock airhole was decently smaller than even the smallest single coil option for the trident.