client.Endpoint.Address = myEndpointAddr;
CustomBinding binding = new CustomBinding(client.Endpoint.Binding);
MyMessageEncodingBindingElement textBindingElement = new MyMessageEncodingBindingElement()
{
  MessageVersion = MessageVersion.CreateVersion(EnvelopeVersion.Soap11, AddressingVersion.None),
};
            
binding.Elements.Remove<TextMessageEncodingBindingElement>();
binding.Elements.Insert(0, textBindingElement);
binding.Elements.Find<AsymmetricSecurityBindingElement>().IncludeTimestamp = false;
binding.Elements.Find<AsymmetricSecurityBindingElement>().LocalClientSettings.DetectReplays = false;
client.Endpoint.Binding = binding;
Client.ChannelFactory.Endpoint.Contract.ProtectionLevel = System.Net.Security.ProtectionLevel.Sign;