Can the speakers in the dash of an 87 560sl be replaced by just taking off the grill that covers it, or do you have to remove the knee bolster to get to it? I've taken out the screws at the bottom of the grill, but the top of the grill is adhered to the dash. Are all grills adhered or is it just mine. I don't want to peel it off if it's not going to gain me access to the speaker. Does anyone know of any instructions that might be posted somewhere that tells you how to replace the speakers? Any help would be appreciated. I live on Maui and I can't find anyone here who knows who to do this so I'm trying to tackle the job myself.