[924RACR]

I agree with Rasta; while yes, you're cornering in the wrong direction for the sump - these tanks do have a very effective sump, and I've not heard of them running into cutout issues with more than a tank, at least unless something else is bad.

So, as for fuel-related issues, what he said... and it's likely fuel-related. Does your gas tank cap when loosened suck air in hard? That or vice versa is usually a good sign of bad venting.

One more final conclusive proof of it being a fuel level issue, not anything else (like time running) would be to head out with only 1/2 gal more than your bogey, 14 gal, and see if the problem shows up within a few laps - before anything else has had a chance to get hot enough to cause any possible heat-related issues.

Sorry I can't be of more help, but it seems like you're looking at the right bits, may just have overlooked something...