I popped one of my balloon tires at Cal Raceway 😂

So I'm back to a newish set, they are indeed slower yesterday in San Marcos. Best I could do was 20 laps. How can I get the last three laps? My q1 and Q2 result were the same, at 19 laps, but I managed to pick up lap 20 at race pace. I appreciate any tips. The car is built and maintained well so I'm focusing on myself, finding time out on the track.