Yokomo YZ-2 Bearing Failure...Check Yours!

[J77MYF]

I've never had an issue with the bearings on my YZ-2 until yesterday's 2WD North East regional. Towards the end of practice I noticed the steering was very vague. I pulled the car off to find one of the bearings in the steering centre link had vanished and the screw had come undone. Luckily I was very kindly lent one otherwise it would have been a disaster. Anyway I've just taken the steering linkage in bits to find the bearing at the bottom of the bell crank has also disintegrated.
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I've seen Avid do a complete sealed bearing kit. Has anyone used them as I'm going to replace them all?