Looking closer at the FAstway e2 its very similar to my equalizer hitch. The back 8 inches of the bar does get greasy, if you grease it. For that style of WDH its really easy to jack the trailer up until the bars get loose. Remove the pin and slide both arms open. On my equalizer there is enough resistance that the arms do not move around during travel. Wouldnt want to dent your bumper. I sometimes open up my arms when i get into the neighborhood. Series of tight 90 degree turns. You can really hear the WDH moving around. Pretty sure my brand recommend you remove the arms for tight turns and anytime there is a steep change of angle. Like offroading over whoops. Even some gas station driveways can have a sharp angle.
If you have the style of WDH that uses chains you could always set it very very loose.