tinc confused on remote nodes behind NAT?

[Rob Townley]

Something tells me this was covered recently, but i didn't find it again in
gmail.   The nodes see each other but if i have something misconfigured that
is decreasing my speed.

All my nodes are behind NATs.
i have a remote node that connects to a central node via port forwarding
from public port 7777 to hp821 running on port 655.

remoteNode ---->  public ip 1.2.3.4:7777  ---->  hp821:655

There are other nodes behind the central NAT that could be making outgoing
connections on port 655.