調校 xray t4 頭toe 度數

如果想調校xray t4 頭toe 度數，除咗更換臂碼啲粒粒外，調整轉向果兩枝推桿嘅長度又得唔得呢？唔該先

說明書話更換頭粒粒可以調校toe度數：Using different combinations of eccentric bushings, fine adjustment of front anti-squat, front kick-up, "front toe-in", front roll center, and front track-width can be obtained.

但睇返呢張set up helper （ https://teamxray.com/downloads/78/set_up_helper_t4.pdf ）就無提到更換頭粒粒可以調校toe度數，咁即係點？

我想知一般來講，想調校頭toe 度數係咪應該調整轉向果兩條推桿嘅長度？