The Dink Network

//Very Heavy Log Item

void use ( void )
{
 say_stop("A log full of heaviness.",1);
}

void arm(void)
{
 
}

void disarm(void)
{
 Debug("Item disarmed");
 kill_this_task();
}

void pickup(void)
{
 Debug("Player now owns this item.");
 kill_this_task();
}

void drop(void)
{
 Debug("Item dropped.");
 kill_this_task();
}

That's a very heavy log. I want Dink's speed to go down while he has it in the inventory. Works if I put a set_dink_speed(4); thingy in void pickup, but if the player saves the game, exits and loads it again, the speed is set to normal. How do you work your way around this?