I have decided to repair the alternator on my 2000 Honda Odyssey. The bearings are smooth. I removed the back cover and the brush holder dust cover. There was what appeared be a mixture of maybe a little grease and mostly of course (carbon/graphite from the brushes). I expect to see dust instead. I wonder how much longer the bearings will go. BTW, I noticed the language in the adv material for the Denso rebuilt alternator suggests that they reuse the original bearings and lube them. Am I OK with just cleaning everything up and just installing the new brush holder assembly ?