I hope you all can help. I bought a 2003 trx400ex running good, but leaking gas. I pulled the carb and noticed that pieces were missing in carb and the float bracket was broken, so picked up a new OEM carb from dealer and just installed. But the bike won't start. Starter Turns over, I have a new battery, I pulled the plug and it looks like I'm getting spark, but I can't get it to catch at all. Any recommendations? Electrical issue? Please help. I've spent hours working on it.