My 8x10 Stenopeika arrived. The tripod I'm using seems a bit unstable. The Stenopeika has one screw mount at the base. It seems to me that it should have more. I have an Arca-Swiss style plate but with only one screw it's not locked in place very well and tends to swing. I was thinking of drilling a second hole in the Stenopeika and adding a helicoil insert. Does anyone know of a decent base to mount to the camera and then to my tripod? The tripod is handling the weight just fine, but only having one contact point makes it a bit unstable.