1968 atco 14 id and paint

Hi i am new to this. I  appologise in advance some of my questions will be basic.

Q1.  Is an atco 14 made in 1968 an atco delux or just an atco 14?

Q2 i have found jenolite atco green machine paint, it seems to be a good match on the internet pictures. Not as harsh as later models,  It is more of a southerm railway mid chrome green (yes i am a rivet counting railway enthusiast in revovery ). Am I on the right track (no pun intended) or making  a mistake? 

Q3. The exhaust muffler is shaped  like sardine tin, but the outlet is a plain round pipe. Should i flatten this slightly to match those i have seen on the internet of that age.

Q4. Is there a simple guide for adjusting the  carb screws when i reassemble it. How do i tune the carb in short.

Your help would be greatly appreciated 

David