Events on any given Sunday can be different from week to week. Track breaks are after heats 4 ,7 &12 with 12 being the interval. That's a set routine and barring events taking there toll these still have to be followed. It is hoped that events don't make things move at a slow pace and everything goes smoothly thus making your day more enjoyable. I'm sure that it is hoped that you can return and that the day doesn't turn into the slow day you experienced previously.