Brakes seizing on front

I have a 2005 Elantra with the same problem, the brakes start locking up after about 5 miles and I get a hard pedal. Leave it overnight and I can do the same thing over and over. First time it happened smoke was coming from the left front wheel so I replaced that caliper, next trip right front caliper had burning smell, I took that caliper apart and cleaned it, it did not stick but next drive brakes locked up so I went ahead and replaced right front caliper and both front brake lines. Still had same problem so I replaced the master cylinder, didn’t fix it, so I replaced the power booster and it didn’t fix it, next I replaced the power booster hose that has the internal check valve built in and the brakes still start locking up after 5 miles. I have put at least $800 in the brakes at this point, and FYI this car doesn’t have ABS. Any help would be greatly appreciated