I'm thinking you said you lined up the dots and set the dampener to TDC....but when the dots are phased on the cam/crank gear you're not on the compression stroke, so you're essentially 360 out with the distributor. You want to be tdc AND make certain both your #1 valves are closed. when you're on the compression stroke your cam and crank dots are both at 12:00, not 6:00 and 12:00 like when you're lining them up. Remember there's 2 TDC's

Hopefully that's all it is. Usually the KISS Pyrotechnic show out of your carb is a good indication