Johannesburg - The Orlando Pirates technical staff have taken aim at a chink in Kaizer Chiefs' armour ahead of their MTN8 semi-final second leg tie.

Speaking after Bucs had stumbled to an unconvincing 1-1 draw against Wits on Saturday, Pirates assistant boss Craig Roslee divulged that Pirates had a plan up their sleeve to reach the MTN8 final which rewards the winner with R8 million.

The teams go into the second leg with the scores tied at 1-1, but Amakhosi have the edge having scored what could be an important away goal.

The final will be played at Durban's Moses Mabhida Stadium on October 2 but in order to beat their traditional enemies, Rosslee admitted Bucs would have to develop a killer instinct in front of goals before next Sunday.

"There is a weakness in the Chiefs defence we spotted when we played them in the first leg.

"I do not want to say too much other than to say we saw something we can work on to ensure we get to the final.

"But we were not convincing against Wits especially in the final third when going on attack.

"We did not threaten Wits goal enough and nearly paid the penalty for being goal shy and not taking the opportunities we created. We need to brush up on that during the week ahead," said Roslee.