DDJ-SZ Jogg Wheel responsiveness when bending and bumping

Hello 

When using my DDJ-SZ I notice it is very difficult to bump and bend songs when beat matching.  It is as if the bumping and bending the jog wheel backwards or forwards have very little effect on the song and I have to do a lot more to get tracks to line up, makes it hard on the hands.

On a CDJ-900, the jog wheel is very responsive and you can even hear the track slow down or speed up, when bumping and bending the job wheel but on the DDJ-SZ I cannot get the same response from the Jog Wheel.

This is Vinyl mode

Is there a setting on the DDJ or in Serato DJ I may be missing?

Thanks

Rich