First off let me start by saying this maybe the best web site on the whole net. Ive been riding for a couple of years, Ive had a 97 Katana and 99 Katana both 600's. About a month ago I bought my first "real" sports bike, a 00 zx6r. It was in near showroon shape from what I could tell. The guy I purchased it from said he had dealer services done on it, but didnt have any recipts. The bike had 8700 miles on it, it now has about 1130 on it. My buddy says I should get the valves adjusted and have it serviced. I was wondering how important this was, I never had it done on the Katanas. Also the bike makes a pop when I brake hard on the front, I read a post about the steering bearings, how hard is that to fix. I have a dealers service manual and Im some what mechaniclly (???) inclined, but is it something I can do in my garage. Other than that I love the bike, Ive rode a gsxr 1300 1000 and a cbr 600, and while they my perform better, The zx beats them all around on comfort styling and driveability. Thats just my opinion though.