The other ting with control check is don't do it in the same order every time because it can be free going one way and not the other,
The reason why I know this is because for some reason I had a FO do it the opposite way round to normal and I was just about to mention it when the bloody TCAS VSI unit came out the panel with a crunch.
Turn out that if you went forward left back right The gubbins at the back was clear but if you went forwards right back it caught on the back of the unit.
The unit had been installed for over a year when we discovered this. Out of a fleet of 7 aircraft 2 had this feature.