Just wondering, i'm borrowing a friend's crane cams valvespring tool and he has the center stud and nut to compress the hbeam for the spring, but he couldn't find the two allen head bolts that secure the tool in the head by bolting into where the rocker arm bolts to. I know it's an m8 x 1.25 thread pitch , but does anyone know the length of the allen bolt? If someone could measure it for me that would be awesome! Could i also buy some studs from the hardware store and use a nut to secure it? Doing a camswap and i really want to get the right size for the tool so I don't mess anything up. Thanks a bunch