The IBEC should gen good. I use those myself. CH has many versions of their ignition. Are you sure yours has syncro spark? Flipping to start? Do you really want us to help you or not?

My starting procedure for every gas engine I have owned since 1997:

Set the idle to a medium idle speed, approx .040 to .060 opening between throttle plate and carb housing.
Verify needles are set to Low-1.25 turns, High-1.75 turns. These are slightly rich settings.
Engage choke.
Turn ignition on
Flip prop briskly until the engine fires and quits on its own.
Turn off ignition
Open Choke
Turn on ignition
Flip prop briskly until engine starts.

More to it then just " flipping prop". Since we are not there to watch what is happening you NEED to provide us with detailed information. You have a good combined 60 years of experience here in this thread attempting to help but so far you are not providing us with what we need to be useful.