i went to do the airbox de-restriction mod yesterday and come across a problem straight away. According to M40COO website you have a cone on the underside of the lid that you press either side (where the lugs are) to get it out, but how do you do it? I tried to do it with my bear hands and the plastic just does'nt bend at all. I also tried to do it by using a screwdriver as leverage to bend the cone in slightly but still did'nt bend. How has anyone else done this part of the mod?