We put together a full blown race motor (cam, head, crank, EC carb and a billet flywheel) and I CAN NOT get it to start. I have built numerous mower race engines without a problem but this is the first AVS race engine and I am having nothing but problems. Have fuel-spark-air and compression, the starter will spin the engine and it will pop out the exhaust and through the carb. Sounds like the timing is way off, flywheel has the AVS hub and is all the way negative. Have to get a new degree wheel since I lost the one I had when we moved apparently. Anyone think of anything I'm missing?? I have NEVER had a problem like this with any other engine I have built, I'm stumped..