Your carbs are not clean. If you have fuel in your float bowls, high quality spark, good compression in the cylinders, NO MATTER what you think, THE CARBS ARE NOT CLEAN.
Carburetors may look like very simple devices but they are very complex engineering. The fluid dynamics that makes them work depends on small specifically located passages. When you cleaned the carbs did you probe all the very small holes in the venturi with a soft piece of copper or brass wire. I assuming you soaked them in carb cleaner (maybe even over night). Scrub all the surfaces with a soft brush (like a toothbrush). Probe the small holes. Blow ALL the passages with compressed air (both forward and backwards). Did you rinse them thoroughly first with extremely hot soapy water. Probe the small holes (again). Blow ALL the passages with compressed air (both forward and backwards again). Did you rinse them thoroughly a second time with extremely hot water (No soap this time). Blow ALL the passages with compressed air (both forward and backwards a third time). At this time ALL the part should look like they just came out of the original manufacturing process. Time to carefully reassemble all the pieces with fresh gaskets.
Your local marina wants hundreds of dollars to do this work. They may have some shortcuts (like ultrasonic cleaners). But there is a lot of putsy labor invoked. That is why it cost so much.
I am sorry I vented on you. But when I hear that "it was sorta working and I cleaned the carbs and it is not working now...." You did something WRONG. Carb cleaning is an art and a science. Just remember that that block of metal is a very complex device, and take your time. It should look like you just bought a new one when you are done.