Too cold to start car

My recollection is the QF uses a relatively hard gaskets. Works fine but the torque needs to be pretty much in the ballpark.

If it came with nylon gaskets for the inlet or float adjustment nut and lock screw, they can flow as they get over tightened. They also can flow with enough heat - then they are no longer tight. That wont be problem this time of year but can be in the summer if stuck in traffic. Try not to use the nylon ones for that reason.