Yes, I agree with you. At low traction track is a special good training. But when a lot of 1/8 at the time and your car does not really have good control then it is another problem. Anyway, on that very slippery track, have you loose the clutch?
Since I have a race in Shanghai on the first of May, I was quite reluctant to do any dramatic change on my 210. However the track condition in Shanghai and Lali are two extreme, one being small and grippy, while Lali are big and loose. To make a long story short, there are a few things I will change to my car. As you mention, I will lower my diff oil from 2000 to 1000 (or even lower) and I will lower my shock oil alittle too, if not run a different piston. I will also love to run a longer camber link on the rear, to make the sliding of the rear end a little more controlable.
As what I am running yesterday, I will not say its out of control, but it can be better for sure. After my test yesterday, I will spend another weekend in Lali to dial my car in, stay tune.