fix problems with zeroClamp blocks
fix problems with zeroClamp blocks

hemantkasat/turtleblocksjs,i5o/turtleblocksjs,tchx84/turtleblocksjs,tradzik/turtleblocksjs,i5o/turtleblocksjs,walterbender/turtleblocksjs,Daksh/turtleblocksjs,walterbender/turtleblocksjs,rodibot/turtleblocksjs,tchx84/turtleblocksjs,garyservin/turtleblocksjs,Daksh/turtleblocksjs,rodibot/turtleblocksjs,tradzik/turtleblocksjs,hemantkasat/turtleblocksjs,Daksh/turtleblocksjs,garyservin/turtleblocksjs,tradzik/turtleblocksjs,i5o/turtleblocksjs,hemantkasat/turtleblocksjs,rodibot/turtleblocksjs,walterbender/turtleblocksjs,tchx84/turtleblocksjs,garyservin/turtleblocksjs