One question - the bottom bearing inside the frame, where the fork goes through, it wouldn't come out (neither would the top one) - but the bottom one had a little grit/dirt in it. It wasn't terrible but it had a little something you could feel when turning it. I cleaned it as best I could but like I said, it just sat in there and didn't seem meant to be removed. So I fussed with it for a bit until most of the grit was out, as much as I could get. Then I added a few drops of lube and got it all back together. It seems fine but should I be concerned? I basically removed the fork and cleaned and lubed and reassembled it. But I'm not a pro bike mechanic or anything.