Monza again

Running a test race with a full-field (42 cars) at the 3.58 mile Monza track (not the "full course"). After the race goes green, the field makes it about halfway down the straightaway, and if any cars are more than ~1 car width out of the racing line (near the grass), they'll slam the brakes and cause a massive pileup. Don't know how to fix it, and I've tried a bunch of INI fixes that aren't seeming to work. Someone want to help me figure this out? Could be fun

I'm sure Cynon can help you with that since he's done something like this before.