Go too far (9)
I believe the answer is:
overshoot
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">go too far</span>' is the definition.<br/ ><span class="explanation-format__explanation">(to overshoot is to go past)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for overshoot that I've seen before include "Fly beyond" , "Taxi too much, perhaps" , "Go extra distance" , "fail to stop where intended" , "Go beyond the mark" .)