Problems with H3 carb

Hello,
I am in the process of getting a H3 running again, I can get the engine to spit and stutter and start to run, however, when it does it pops out some smoke through the carb and the exhaust and stops. I have tried switching the plug wires (from 1 to 4, 2 to 3, and so on) thinking I might have got the distributor put on 180 degrees out and it won’t start at all and the only thing it did was a much larger pop out through the carb (backfire?). I am not very familiar with gas engines (especially those with points and a distributor), I had it running a while ago but it would die if you took the choke off. I have tried the settings from the instructions that came with my carb kit of one turn out on both the needles, and I have tried putting the idle in one half a turn (where it is now) and also a few half turns out (where it was kinda running but the plugs looked rich). Does anyone have an idea of somewhere I went wrong and somewhere to go from here? I appreciate the help in advance!

The minimum on the main jet should be 2 to 2 and 1/2 turns, and later fine tuning the main jet at full throttle. It's not impossible that the misfiring is from something else. 

I appreciate all the helpful replies! I figured since I had the carb jets turned in too much, and because it was quick, I turned those back out a few turns and it came a lot closer to running! I will check the other things when I next get the chance in a few days. Does anyone happen to know the cold intake valve specs?

After the holidays I finally got back out to working on it. I looked at the carb to make sure that it hadn’t gotten dirty since I cleaned it; and sure enough the fuel pump (that is bad anyway) must have been full of dirt or gunk because in the bottom of the bowl was a solid 1/4” of what looked like mud. So, I cleaned the carb again and it started right up.

Now the questions that I have are related to the carb. When the engine shuts off sometimes fuel comes pouring out of the mouth of the carb. I have just cleaned the float seat and needle so I don’t think they are the issue, and I set the float the way that the instructions that came with the carb kit suggested. It is a new float because my old one was leaking, and this new float does not seem to leak. All that being said, other than a float issue I can’t think of what could cause such a large amount of gas to come out of the carb when the engine isn’t running. Also, what sets the upper limit of the rpm on the machine? When I got the machine the weights in the governor were gone, and I have since found some and replaced them. However, if I open up the throttle to full the engine really starts screaming and it sounds like it is going way too fast (I am waiting on a handheld tachometer).

If the 1/4" layer of crud was in the bottom of the carb, it means that if you have a sediment bowl the screen is missing and in all likelihood the small debris coming through gets stuck in the needle and seat, until the tank is cleaned more keeps on coming. I've had issues like that but after installing inline filters the issue is gone for good. My model B has no sediment bowl at all, but a serviceable 'inline glass view gas filter' with a fine screen (Amazon), it's the last filter you ever need to buy for whatever you put it on.