Cape Town - Bulls coach Frans Ludeke says rugby's scrums have become a grey area which leads to inconsistent decisions from officials.
The Bulls were heavily penalised at scrum time in their 15-13 defeat to the Stormers at Newlands last Saturday, with loosehead prop Dean Greyling the main culprit.
Greyling was dominated by Frans Malherbe and conceded four first half penalties that resulted in 12 points for the Stormers.