Kaseys advice is really good and I would highly recommend listening to what he says. But you may also want to check your 2 stroke oil. Some 2 stroke oil makers have a recommended mix ratio that is different than what the honda recommends for their brand of 2 stroke oil. You may want to check what the oil maker may be recommending and make sure it doesn't conflict with what honda recommends. If the maker recommends a certain mix, than I would seriously consider running what they recommend. And jets generally have thier number sizes on them somewhere, so you should be able to rear what your slow speed jet and high speed jet sizes are. If you are sight challenged like some of us older members, remember your magnifying glass! LOL Smoke is caused by oil Too much of an oil mixture will cause excessive smoke even though your jetting for your carb may be right on the money. A dirty air filter can cause rich running condition as it restricts proper airflow. All these things should give you several possible causes or conditions that you will want to check into. And check your sparkplug. That will definitely give you a good insight as to wether or not you trike is running lean or rich. Proper plug color should be a tan or brown. White color would be showing lean and a dark grey to flat black would indicate a rich condition. A shiney black plug would show that you were having other problems, but your plug is burning off your 2 stroke oil, hence the bug screen. LOL I would be way more concerned if my 2 stroke had no cloud behind it at all then I would by a nice thick cloud. LOL No 2 stroke oil is way worse than excessive in my book.
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