Hi all. It's my first post in the group, so I hope I am doing this right. I had to take off the shelves of my Genesis 310 to transport it and lost the bolts in the process. Does anyone know the size of these bolts so I can buy replacements? It appears they are listed at Weber part #62773, but the current prices is about $30 for 4 bolts and washers with shipping. Any information would be greatly appreciated! Thanks in advance.