Guys help me out Im trying to find out the size of the 4 head screws and the 4 backplate screws on my new toro nero team. Im replacing them with socket head screws no more flatheads. The screws are NOT 2mm, 2.5, 3, or 3.5mm they are in between 2.5-3mm for the head screws and 2-2.5mm for the backplate. The tonys screws kit for nova engines doesnt fit either. Could they be us standard sizes?