Im new to these forums so bare with me. I got ripped off when i traded my 300ex for a 99 400ex and when i went to bump start the 400ex it caught fire and burnt all electrical. Well since then i bought a 05 400ex that just needed a motor so i put my 99 motor on it and got it together and it has great compression it turns over just wont fire. I had it running for like 5 mins but died so i had the carb rebuilt and its getting plenty of fuel and plenty of spark but i cant get it to start and run im lost please help