Obviously, none of us can answer for Len Poli. But he's a master at what he does as far as many of us are concerned. Len's metric figures will be the accurate ones. Percentages and Imperial weights will be less accurate: USE THE METRIC ONES.
Pump each loin at 10% of its weight. If one weighs (say) 2500gm: Inject it with 250gm of Len's cure. Do the same with the other - (say) it weighs 3080gm: Inject it with 308gm of Len's cure. You get the idea?
senorkevin wrote:The truth is I need more brine to cover to loins.
Also, should I tie up the loins with string like the pic?
Use a smaller container and turn the meat regularly, or make two separate cures and put the meat into two separate containers.