Thermoquad idling issues

At this point I think I am going to shelve this particular reman carb. My dad has collected lots of mopar parts over the years and he has never ran a Thermoquad. He has always been a Holley guy. I found a few Thermoquads he has stored for years. I found a 4972s that looks quite different from what I have. Also a 6139s, which looks like it has been remaned before. The shafts are bare metal with no teflon coating. Also a 6322s, which is the nicest. Looks untouched with teflon coating on the shafts. Also found a new thermoquad strip kit. The 6139s and 6322s both have a little play in the primary shafts. Not sure if it will matter much. Which of these thermoquads would suit my engine the best?