Driving a Governed Truck Etiquette 101

I just had a guy keep me broadside to him for 5 minutes. I caught him fast (I was bobtail) at top of hill as we started down the other side he gains back (he's hauling a container and is heavy) and keeps me alongside him at 105km/h. A car is catching up to me just as I get enough room to safely move over in front of the guy we are at the bottom of another steep hill.

My way of showing him some etiquette? The car is still too his left in the hammer lane so I slow to 80 let him catch up and then I go back to 105 lol dick move I know but if he's gonna be a dick Ill return the favour. He hollars at me on the CB calling me a douchebag I just say common courtesy ain't too common anymore. He blabbers on cursing again.

Usually if a guy is behind me cruising st highway speed for a while and he gets the chance to pass I'll back out and let him go. It's just that, common courtesy. He knows my job is difficult and I know his is the same, ill lend a helping hand where I can, big or small.

 

You were bobtail and you put a heavily loaded truck in that position, why?