MD> I believe I saw in a video from Avon that the routing info should read:
 MD> 1* 2* 3* 4*

Avon's videos are a bit outdated in terms of routing, but in general the same system exists today.  You shouldn't need to do anything in your routing for Netmails to be routed through the network.

 MD> I tried to send a netmail to someone other than my hub.  The netmail did
 MD> not go direct to the address, but went to the hub.

The mail will not go direct to the node if they are not configured to go direct.  It will route through the network and get sent to the receiver's node.

 MD> The hub asked me to change the setting to:
 MD> 1:* 2:* 3:* 4:* and it still didn't go through.

What this is doing is saying that you want all netmail addressed to zones 1,2,3,4 (IE all of FidoNet) to be sent to this node.  It sounds like you don't want that at all.

... When all else fails, read the instructions

--- Mystic BBS v1.12 A48 2022/02/17 (Windows/32)