Looking for help in improving the ride on my RV

Our 2015 ACE 30.1 is also on the F-53 Ford so we know it is not going to ride like a car. However what we feel it should not do is "wander" down the road. Only 800 miles and had the alignment done, the toe was just barely in spec to the negative side and reset to just slightly to the positive. Still wanders going down the road, this will really wear the driver down on a trip. I am thinking about the "cheap handling fix but still worry about changing the suspension. Jim.