Hello, This is my first time on the website and I've really enjoyed it. Now I'm here at the forum to ask for help with a situation. It's a 1981 Yamaha seca 550 that I'm building into my racer. The bike had been sitting for a long time,the carbs were junk. I found a set of used carbs tried to start the bike without the air box because I want to run pod air filters. The only way I could get the bike to start was to prime the carbs and hold my hand over the throats. once it starts it will slowly take throttle but doesn't idle. What I have been told by the self proclaimed motorcycle experts here in town is that i will have to rejet and syncronize the carbs to run these filters. I hope someone if not several of you can point me in the right direction.