Shimano PD-R8000 Ultegra SPD- SL Pedal spindle / axle slop play problem

After only a relatively light year of usage, I investigate the slop and play in my Shimano PD-R8000 Ultegra SPD- SL spindles / axles. Interestingly, I had 10 faultless years with my previous pedals, the PD-RS500 SPD-SL, which are considerably cheaper .