# Effect of the M8 mirror mount swap (last light green square @ 2/10/2019)
- it seems it triggers a slow down of the horizontal drift (yellow line, AMP_Cam_PosX: horiz)
while there is no effect on the newly appeared (end of august) vertical drift (violet line, AMP_Cam_PosxY: vertic)

- The effect on the PMC alignment is not obvious

plot 1 gives the trend on neoVAN & PMC signals after the M8 mirror mount swap (02/10/19) and the neoVAN alignment adjustment

(plot 2 gives the legend of the plot)