I cannot release the nearside bonnet catch. The o/s releases ok but the little catch in the grill doesn't pop out, it has to be searched for and pulled out. When the little catch is pulled it release the o/s but the n/s catch remains firmly closed. I cannot see how to get in to release the bonnet catch by hand. I have tried squirting WD40 through the grill into the area where the catch is to no effect. I cannot see how to remove the grill from the outside - can anyone help please?