"I used to think these things evened themselves up over a season," The City manager said to the Sunday Mercury.
"Sometimes we have had decisions go for us and we have ended up scoring a goal and winning the game - but that hasn't happened for a while and God knows that we have had a lot of bad decisions lately. That's obviously not the sole reason we haven't been winning, but it certainly hasn't helped.
"I think the standard of officiating has declined and the situation is crying out for video analysis. Only when we get that will things improve."