Any one else notice that a few books purchased from Amazon have very wide right margins, but the right margins look normal on other Kindles and Kindle apps? I first noticed this with a single book, so I assumed it was probably just some stupid CSS formatting even though the right margins were wide only when the book was viewed on the HD. Then last night I downloaded a sample book that has the same issue. That is only two books out of dozens that I've looked at since getting my HD a few weeks ago, but that is two too many. Since the HD uses a *.prc file name I cannot immediately tell if they are mobi7 or KF8. I haven't had time to dig further into this, but it is frustrating to see a double-wide right margin on a device that already has a narrow screen due to the 16 x 9 ratio.