I plan on going for my state inspection (MA) tomorrow.
I have been going back and forth with minor exhaust issues.  Fortuntly he
didnt run it throuw the machine but said by feeling the exhaust there wasn;t
enough pressure.  I thought he was crazy.  I couldnt find anything wrong.  I
brought it to a muffler shop and they fould a plug on the converter had
rusted out,  now with that fised I pan on going for the test tomorrow.

I have no idea how it will do on the emmision test but I am a bit worried.
I have changed the plugs, wires and cap.  It seems to rung good..

What can I do to reduce the emissions before the test?

Should I adjust the timing?  Do I advance or retard?
The gauge or scale is unreadable, how can I tell which way I am adjusting
it.  If I go in one direction it accelerates.
I also noticed the notches are different sizes.  Is the largerts one 0, that
is the factory setting.
The truck is an 88 k2500.  I beleive all the components are there.