i have a 1989 firebird with a 2.8 and 5 speed and i had problems with the rotor and distributor cap cause it wasnt startin so i changed it and it ran good for a while and now its chuggin real band so i replaced the cap again cause the inside of it was all eatin out cause of the rotor and it ran fine for a while but now its back to chuggin and i dont know if i put the rotor on wrong or what and i have a book for the car but it says nothin about rotor position so i could really use some help, thanx