Suzuki "Day" Oval vs Indy Oval

I just got around to running on the Suzuki "Daytime" track. I kind of ignored it for awhile thinking it was just a modified Suzuki track that I had already been on many times. This appears to be basically an Indy Motor Speedway track that runs in reverse. However, it races so much more smooth than the IMS track, i.e. the CC seems to be more forgiving as in IMS the car will scrub too much speed if the line is barely off and it is very difficult to pass without crashing, where as this Suzuki track runs avoid of all of that. Being such an Indy fan (been to the 500 23 times) I almost wish I could tweak that track in such a way to have it run like this Suzuki track. I believe Maxi did both. In full disclosure, I'm not that great at using ZAZ or Cmagic, yet. Any advice?

There is a mod for that track ("I think it's called thunder days) that cars reach more than 400 km-h
I made the track exclusively for that mod

my works
[www.grandprixgames.org]

I see the Indy oval wasn't yours, Maxi. Any advice on how I could "tweak" that one to match the drivability of yours/