Alignment and Safe-T Plus

First, get the toe in checked. Make sure it is correct for your coach. Normally 1/16 but if you are fully loaded then I'd go up to 3/16. I had one coach I had to push it to 5/16 before it would settle down. Google on how to do this yourself with a steel tape measure. Can't remember if there is a steering damper on this unit or not, if so disconnect it and see if it is stiff to move, if not then replace it. I have seen directional tires mounted on rims going the wrong direction, take a look. I have also seen slipped belts inside of tires that will cause this too. I've seen the safetplus installed and then one of the tires wears funny because the alignment problem wasn't delt with. Lastly, alignment specs can be arbitrary, each vehicle seems to have it's own setting that works best for it.