Well, I haven't experienced it yet, but she described it as a violent shuddering of the front end, downhill on the brakes, that could would only stop when speed was scrubbed off. She said she could barely hold onto the wheel. A 'tank slapper' in motorcycling parlance ... We'll see, hopefully nothing too serious, and whatever it is curable by the timely application of cash
If you are heading to Seattle then you could swing by Quadvan in Portland. John can figure out what is going on probably while you wait. He is as knowledgeable as anyone on these steering issues. Might be worth a short stop in P-town. Not far from Portland brewing just in case she gets thirsty while he works on it.