When you are geting the prototype accelerater for the hiden beks you have to get into the black vulkars base once inside go all the way through untill you get to the room with the prototype accelerator in it some vulkars will offer you money to kill gadon accept then go back into the vulkar base kill all the guards then take the prototype accelerator switch people and talk to zeadra tell her you have prototype accelerator win race then you can tell zeadra you have p.a. again and again gaining valuable items and xp all the while.