i was trying to set my timing on my 1992 mustang gt auto, with my dads gun...i used the 1st cyclinder plug and hooked it put to the battery..but on the crank pulley i cant see any degree markings..am i doing this correctly..is there markings down on the crank....or did the kid before me set the timing so far...what is stock timing..i think i need some detail instructions on adjusting timing..maybe with pics...