Has anyone retrofitted a schlumpf on their strida?

Below a few pics of the new buttons and plates:

Detail for our weight-weenies:
The new black buttons are much more heavy than the old silver ones; ~ 9 grams instead of ~ 3 (per piece!) :smiley:

12 more pics of the Schlumpf speed drive are here:

1600 x 1200

480 x 360

:mrgreen: