Front brake fixed

Hello Together I am already completely unnerved – have a VF 750 Custom Bj 83 with a brake damage very special kind. When the brake is cold it works perfectly. In hot condition however, the brake goes up to the pads smoke. I changed the main brake tylinder with brake lever and both brake calipers . No improvement! Now there are still the brake lines and the distributor at the fork. Who did advice ? many thanks in advance