stop doing that.
those sets where you fail count. in fact they count even more in terms of recovery as you hit failure and strained the CNS even more.
keep your focus - the reps went 5,3,5,3...very strange
the first set on top weight will always be a bit tough
the second set you actually adapt to that load and it should fly up.
the third set you get it up...cos its the last set...and its all willpower
hope u take the advice in the spirit intended.