The road cases are cool...however, I would QUICKLY ditch the current set and put a GE Filter-Flo set in their place! I've seen this done with Maytag Neptunes before as well; why is it always the crappy machines??
Yellowing knobs are just one more unattractive quality of an aging plastic GE...though I can understand where they are coming from, because these machines ARE lightweight and easy to move; around 140 pounds for the washer and even less for the dryer!!