Pioneer DJM S9 - Manual Looping Adjust Start/End Points

HI

When Looping and Seting  Manual In and Out Points of your loops is it possible to adjust the endpoints to make them tighter and compensate for non grided/quantised material?

When Setting The Start/Endpoint, it is shown static on the Screen, I would Like to know how to adjust in/outpoints is there a shift/encoder combinatation functiion that does this ?

many thanks

Jason