Yokomo YZ-2 steering issues

[Andrius]

hi folks. Recently assembled roller and put all electornics in . Have problem with centering servo. Servo horn mounted at 90degree on servo. Gap between steering link ballcups is 0 as per manual. Wheels isnt in center whilst servo in neutral position. Then i moved servo horn about 60degrees to left side, however steering throw isn't equal. Then i made gap between ballcups and moved servo horn at 75 degrees. Bit better. Then altered radio subtrims 92% to left side. Seems ok now. Anyway looks dodgy considering yokomos roller cost. how do you guys sorted this problem? No shims on servo arms. I though moving servo wont sort the problem. By the way servo is savox 1257tg. cheers