Sir, you me and many others do not know or fully understand all scenarios or obstacles. You’re free to feel as you want, in my case nothing else was changed. I'm sure you've heard of vehicles being cold natured and running better when fully warmed up.. in my situation my engine never fully warmed up with a 160 stat and was running as such. Stumbling, stalling, pinging ect. Yes the choke worked, yes timing was correct yes, all ignition components were working correctly, fuel system, electrical ect. This isn't my 1st 2nd or 3rd rodeo. You can chalk it up as you learned something new, congratulations.