Mine leaks a bit around the edges with the Weber lid and I don't worry about it. The fire is far enough below that point that those air leaks don't play much of a role in snuffing out the fire. When I close the air intake vents the fire snuffs out rather quickly.
Kamado Joe Big Joe ° Kamado Joe Classic ° Old Country BBQ Pits Brazos Offset
UDS ° Traeger Lil' Texas Elite