Chazb

So I just rebuilt my carb on my moster 185 plus.. I went super slow and I thought I did everything correctly, as I followed the vittorazi video on YouTube and did exactly as they did. The first time I went to prime the engine, the primer bulb pushed fuel to the carb but the primer bulb would not tighten up and then allow me to push the primer button to let a little fuel in. I believe its pushing fuel straight into the carb. Thoughts on what I did wrong and what could remedy the situation?