Hey everyone, this is my first post here on motorbicycling.com. So I have been working on my motorized bicycle/board track racer inspired build for almost a year now, and am nearing completion. I mounted a temporary gasoline tank and temporary exhaust pipe (as can be seen in pictures) to the 5 hp Briggs & Stratton engine. I had to order a clone Mikuni 22mm carburetor from ebay and build a manifold to mount it on, because the original carburetor setup would not work with the limited space I had on the frame of the bicycle. I tried to run the bike for a test with the temporary gas tank and exhaust setup so I could dial in the mechanical parts before moving further with the build, but the engine would not run when off of choke. It runs briefly when I take it off of choke and on occasion will run with some throttle but always dies before I can get the bike moving. I am really confused with what to do to the carb to make it run. Can someone please help me get the motor to run normal. I tried to adjust the carburetor by adjusting the screws on the side but I couldn't make much of a difference. Is it possible that I have to spray some carb cleaner in it, even though its a new carb? Any advice would be appreciated.