[19Fordy]

It's easy to check the floorboard bottom cushions that help keep air from entering.

If you have access to a lift, just raise the car up and look at the bottom of the floor board where the pedals come thru the floorboard. If you don't have a lift use jack stands and a jack to raise your car up so you can crawl underneath for visual inspection.

With your car on the ground, you could also lift up your floor matt and visually inspect the pedal travel. Very slowly depress your pedal and make sure nothing is impeding its travel. There is always the chance that your return springs are weak although, that is not common.

YOU CAN see the pedal cushions in the second photo. Car is a 40 Ford but, yours is the same idea.

Let us know how you make out.