Went on a test drive after finishing my 5 speed swap and both of my front calipers seem to be seizing, however when I jack up the front end with the vehicle off, if I hit the brake pedal they both unstick, I took off one wheel and compressed the pistons in the caliper and they move freely, no signs of sticking, and it doesn’t happen when driving around in the driveway just when I get on the main road.

Is this a problem with my master cylinder? The pedal feels normal. These are 199mm tundra brakes if that matters

Edit: this is a 97 with the older style master cylinder assembly and not the newer one that is one unit with the booster