Speak to rotormotion,
Knew someone who had similar problems in a rx7, rotaries have a tendancy to flood very easily especially if cranked too many times. Rotormotion I think installed a solenoid in the fuel line to restrict the amount of fuel to the injectors whilst starting. He hasn't had a problem with it since.
I'm sure it isn't internal problems, besides most dealer mechanics couldn't find their ass if they had a mirror.