Getting Smitty neutered should help some. Remember now is the crankiest time of year for basenjis…everyone is in reproduce mode! I agree with separating them at feeding time. At least until you everyone gets used to each other and sorts out their place in the pack.
To some extent, I think it is important to let Smitty and Ramsey work it out...but not to the point of drawing blood. Ramsey probably feels threatened by a new guy in the picture. I wouldn't be quick to reprimand one or the other for growling either. It is hard to know exactly what is going on during an interaction, and you wouldn't want to reprimand at the wrong time...kwim? If you step in and reprimand right as Smitty was about to submit, you could keep delaying (or escalating) the situation. If you think things are about to get out of control, separate and crate them both for a few minutes. Often that is enough for them to forget what they were angry about. I also do 'cooperative feeds' with mine when I am having an issue. Both dogs have to sit politely and I take turns feeding out treats to the offenders. But, beware...they need to be trained to do this first before you would want to try it with two animals that might fight over treats. It helps if you have another person to train and treat each dog when you first start.
Another technique that sometimes works is to simply get up, and step in between the dogs before things get out of hand. Usually, a stern 'knock it off' will help, if you can deliver it BEFORE they actually start fighting.
Good luck, I hope everything settles down soon.