when i am idling in gear, my rpms are at about 700-800 and i can literally watch the battery voltage drop. if i keep one foot on the gas just a little and keep the rpms at a steady 800, the voltage is perfect. i have a cam which gives a rough idle already and i just installed a 140 amp alternator, so i know it should have plenty of juice. i am thinking if i just increase the idle rpms i should be alright, how would i do that? thanks