F 53 alignment & steer safe

My experience with motorhomes with straight axles in front is having the toe-in set to the max value (5/32" on F53s) will provide the straightest tracking and resistance to being blown around by passing trucks. However, this will come at the expense of outer edge tire wear on the front tires. Most of us will "age out" our tires long before the tread is worn to the point of needing replacement so I'm cool with the trade-off. Squirrelly handling on a straight axle vehicle is often caused by loose front end components (tie rod ends and kingpins) allowing the toe in to go to zero or a negative value. 5/32" is not a lot of wear distributed across four parts. In this age of sealed front end parts, a lot of the oil changers just are not familiar enough with "legacy" vehicles to even know where to find the fittings to put grease in so it doesn't get done. Good case for changing your own oil and greasing your own front end so you know it's done right. Grease the front end every oil change and it is VERY unlikely anything will ever wear out. The stuff is pretty tough.