Yeah, my car's definitely "looser" overall, but yours is WAY easier to drive because of that. With a little LFB input to a: take weight off of the rear end on turn in so it can rotate, and b: keep the drivetrain loaded as you put the throttle back on, it really gets around the corners well, and comes out like a bullet!
I was trail braking through a top-of-second-gear left hander, and it just whipped around on me hard! I think I didn't need the brake input where I was, which caused it to break loose, but it was my second lap and I was still feeling it out. I managed to hold onto it, but only after a four turn death wobble...
I wouldn't mess with the car's setup. Just the Kevin's setup.