Stitch selector on Lervia KH400?
 
                Lervia KH4000 sewing machine.
Please can you explain how to get the stitch selector dial to turn to R, S and T ( which are all in red on the dial) it turns easily until Q, but then will not turn any further. I have tried with needle up, down...correct length and width, with button hole foot on and off etc.
            
             Diane Hinton
            
 September 2023