I have a stupid question. I have six 5/16 threaded rods and six 5/16 stainless steel lock washers. If I torque all six lock washers down until they are flat, approximately how much PSI would that be? Enough? If too much I can use 4 lock washers. I have built a 8s square pack but still need to mount the plywood. I am not going to worry about springs and what not. Even with 2000 cycles the cells will most likely outlive me.