To my knowledge there is no such thing as "Accurate End Mod" sets. End Mod sets go both in powers that buff endurance and also powers that drain endurance, many of which need accuracy.
It might be a good suggestion to create such sets, but in fact, no, there are not Accurate End Mod sets, hence why End Mod sets have Accuracy in them. They are slotted in things like Short Circuit, Shock, or Consume, which need to hit.