help !!! never had issues with ears other day diving at around 35 meters my left ear made a long passive equlization for about 5 seconds instead of the normal 1 second “PST” noise it made a constant 5 second “PST" noise no pain or un normal feeling followed went to ENT just to be safe they said they did see any damage in ear but from that day on my left ear makes a long equalization “PST" noise why is it this possibly tight eustschien tube ? o