Slotted shims provide camber angle adjustment by interposing them between the upper wishbone fulcrum shaft and the cross-member spring turret to which it is attached. They can be manufactured from corrosive -resistant stainless steel. Slotted shims are used on assembled machine components in order to maximize alignment and balance. The slot aligns the shim to be installed without disassembling the rotating shaft components or motor mounts. Shims and shim stock are used to fill in a space between two mating surfaces or components.