I was actually really happy, that was the only thing the mechanic found, that and that the front pinion seals need to be replaced which can be done at the same time. I'm assuming by "trunion" he meant the front wheel knuckles. They want $900 for the work so I'm thinking about trying it myself but it looks like quite a job. There was a bit of play in the front right wheel. How critical is it that I get this done? How hard is a knuckle rebuild?