XRAY - Model racing cars

Is there anything that can be done about spliting the upper front arms? Got hacked at the track and split in practice. Replaced the arm with a spare and then hit tubeing in corner, split it again. The hack was pretty hard, so I understand that one, but i didn't hit the tubeing that hard, so I must have hit it just right.

Exactly. Actually there is a small range where it is okay for them to be different. Like for instance if you use 0s for the kickup you can also use either zeros for the roll center, 1s up (both) for the roll center, or 1s down (both) for the roll center.

The reason being is that zero is parallel and using 1s up still keeps it paralell and only raises it. Or using 1s down only lowers it. The problem comes when you are using a setting that actually changes the angle of the upper arm in relation to the kickup or vice versa. They must remain parallel no matter which angle they are at.