I've got a 6.0 Tecumseh horizontal engine with the new style carb. I've cleaned every jet, port, opening and anything else I could find to clean. When you push the primer button, very little if any fuel goes into carb. I tried closing the breather intake with no luck. It runs fine when you pour gas into carb. I've replaced the float, float bowl and gasket, needle and seat, and the primer button, no help. When I spray carb cleaner in the openings, seems all the jets are open and working fine. Is there suppose to be anything inside the bowl nut, like a needle valve or the like? I found a break down picture for my carb, and it shows a fuel well spacer in there. My local shop says that there's not suppose to be one. Who's right? I'm in the process of a third soaking and cleaning job. Any help will be appreciated!