Wcf – Why can’t I connect to a WCF service with net.tcp but i can with http

I have a WCF service running on the IIS with a ServiceHostFactory. It's running fine with the WSHttpBinding but because of the speed and everything being on the same network (no firewalls) i want to speed up things a bit using the NetTcpBinding instead.

When i try to do that i get this error:

Could not connect to net.tcp://zzz.xxx.yyy/MyService.svc. The connection attempt lasted for a time span of 00:00:01.0464395. TCP error code 10061: No connection could be made because the target machine actively refused it x.x.x.x:808.

I'm using SecurityMode.None just to make sure that is not screwing me also i tried either of these on two different tries:

binding.Security.Message.ClientCredentialType = MessageCredentialType.None;
binding.Security.Message.ClientCredentialType = TcpClientCredentialType.Windows;,

Also i should point out, that i'm pulling quite a lof of data from one of the service calls, so i also put these (both on the http and the tcp attempts – setting maxMessageSize to 1000000)

binding.MaxReceivedMessageSize = maxMessageSize;
binding.ReaderQuotas.MaxArrayLength = maxMessageSize;

It should be pretty easy getting it to work, so what am I missing?

UPDATE: I added the TCP port 808 to the website identity and tried again. Now i get this error:

You have tried to create a channel to a service that does not support .Net Framing. It is possible that you are encountering an HTTP endpoint.