You need to find & fix the issue, no matter what.
It might run OK for now with the tape, but you are just masking (...) the problem. The carb is still not working correctly, and the bike will eventually suffer for that, one way or another.
Too lean, and you could seize - too rich, and you will foul plugs and build carbon.
Are you absolutely sure that the entire stock air filter/airbox is intact? I don't recall, it was a few months ago when I checked that bike out.