Thanks for all the advises! I am still unsure after reading all the threads on removing the tumbler on the 91 190E series. Some say you just instert the tool & it comes out with the bezel. However, others say you insert the tool & unscrew the black cover ccw & then then you remove the tumbler. Does anyone know which way to do it on this car? I don't have the new one yet to view & and still trying to remove the tumbler.