Air/ fuel tuning

i scratched my last reply.
i gave the 76/86 with the 6.5 pv a try .

very similar to how it was with 78/86 and the 5.5

as for idle ratio , is this measured in gear or neutral?
how much affect would air temp have on these readings? driving from 50 -75 fahrenheit.

i returned to the 78/86 with the 5.5
my idle screws are a fraction less then 1 turn out.
in gear i get anywhere from 14 to 15. probably related to engine temp, my fans come on at 195 and turn off at 175 so the temp is always somewhere in there.
but if i put in neutral i will get about 13.8 on avg.

cruise at this setting is around 13.5 -14 that will stay at that anywhere from 37mph upto 55mph . then will richen up . 2000-2800rpm approx.

after changing back to this the plugs cleaned up nicer.
only thing that concerns me is that at idle the car doesnt sound very crisp although doesnt stall ?

whats best way to set idle ?
highest vacuum ? in gear ? rpm?
although in neutral i have my car at 1400rpm i have read that to set idle you should drop the rpm to around 900 , set max vacuum then put the rpm back to where you want it ???
also last time i did the vacuum it was probably very similar from 3/4 turn out to 1 full turn. so where would be best place to set in a situation like that ?