Thanks. Time is a big problem, which is why I avoid most time trial competitions. On Nurburgring, I find that the first 3 hours is the longest 45 seconds, though. If you can nail that first mile, the rest of the Ring is relatively easy, but it is a tough mile.
I was following DaletonaDave and noticed him doing what probably holds most drivers back there. If you don't approach a curve with the proper out-in-out line, you will be slower; if you don't anticipate what's coming up after the approaching curve, you will be slower; if you don't brake early enough, so that you can accelerate out of the exits, you will be slower.
If you can improve these three things, a "natural" course is not all that difficult.
I hosted a two-lap replay and a ghost of back-to-back 7'39.x C7 laps that are less than one second apart, if anyone wants some practice. The laps were early laps, so I ran up on the sidewalk both times, but that is my only real complaint. They show that you can be consistent, though, and that's their point. I will post the link, later, if anyone wants them.