Yes, this subject has been thrashed over time and I have been guilty of participating in the past. But......why in the Yamaha Engine specs for the 4 strokes they say WOT 5000 to 6000 rpms? Yet we seem to insist that in order to avoid engine damage we must be up around the 6000 rpm WOT. I am running 5600 to 5700 on my F200xb and with the 6000 WOT suggested, will my F200 be humming with the angels soon or can I predict its lengthy and fun filled future.