Just bought a surrey top replacement in Fabric, it does not have the pocket to insert the stiffeners, it includes plastic stifenners instead but it doesnt hold the hood when I insert it into the windhsield slot, I bought the metal stiffeners that have the holes in them + the rivets (refer to image).... do I have to drill the holes on the plastic stiffener attached to fabric hood.... Im worry the rivets wont fit in the slot..Please help if anyone has an image.