Without starting to get you panicking, could be the bike, the geometry, suspension settings, tyre pressures, riding position, line you're taking, a whole host of things.
But if someone can go through there on the same bike (maybe even your own) then it's got to be you.
A mate of mine took the 999 out for a quick spin up and over the Cat a week or two ago, and he confirmed what I thought that the front wasn't giving him any confidence, and felt light and wanting to tuck everywhere, I went over to K-Tech that weekend and had some new springs and about 3-4 hours setup time and the bike is transformed, although I haven't really ridden it in anger, they did say though that the weight distribution wasn't great on the 749/999 and it's a common problem though.
If you've got TWOTR have a read of the first couple of chapters and you'll see what I am saying about the positives, even things like missing braking/turning points and still making the corner shows that you can push more and take different lines, which maybe quicker/better.
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