Hey guys as most of you no i had a starting problem after the engine rebuild. It turns out the timing was off. So timing has been adjusted to a T. Carbs cleaned, plenty of fuel. Plenty of spark. Battery fully charged even tried jumping it off a freshly charged car battery and still wont start. All connections checked and rechecked. All grounds sand shiney and tightened. Still nothing. It wont even fire with starter fluid. Its cranks and cranks but just wont catch. Anyone on here got any ideas on what could cause this. Everything is working as it should. Im at breaking point with this and im close to parting it out.