Thanks for taking time to translate! Ive heard about this aluminum arm (LCA) for sometime but never saw the difference til now. It should fix my same issues as well. Ive read that 20mm forward (positive castor) is too much and will wear out the inner CV joint (DOJ) in a hurry, not to mention possible axle rub on the sub-frame . I think the 9mm would be a good number. Mines a '03 Baja that i lifted 7inches and dropped sub-frames as well.. I run 31inch M/T tires. I'm in need of lost Castor and a little tire clearance at full lock same as you. Thanks again.

The front bushing of the wishbone is a poor design, very small for the movement required. I wonder if someone makes a sealed heim type bushing to replace that with.