[hamilton]

Most times I here someone say it bogs (engine makes noise but no power) it's lean. If it sputters (as if choke is on) it's rich.
I think you could get it to run well with the JD needle but never tried.
I have a setting that has worked great for me on my 12 200 all temps and sea level -3500ft. It would require having the slide cut or buy a new one.
I run air screw 1 turn out, pilot 45, slide 6.5, NOZH needle clip #2, 172 main.
The slide really made the 200 a joy to ride, best 70 bucks I spent on it.
Also the stock gearing was a little to tall for me, 12-50 tooth works well.