1988 300 Fourtrax. Runs one moment not the next

Back for help on my 1988 Honda fourtrax 2×4. I have since replaced the carb, plug, wire, solenoid and an oil change. After installing all the new parts and adjusting to what seemed right it fired right up and I ran it around the yard and ran good. Turned it off and on a few times, left for work. Came home after work to look it over again and haven’t gotten it to fire up again since Friday.

It cranks and sometimes will give a sign of life but thats about it. Spark plug is fouled now and only giving a white spark. It’s a cheap NGK so first thing I plan to try today is a better spark plug.

One other problem is the the choke valve kit i bought and cable just don’t seam right but it worked the other day. But if I where to use a long thick spring to keep the choke valve pushed all the way in, it would still run just no choke correct?