Failed Emissions test- CO was too high. What now?

[Fausto]

I am not exactly new here, I have lurked and learned from all of you for the past 4 months.

I got my first motorcycle a 2007 GZ250 with 4,447 miles. It did not start, battery was dead. I jumped it with out turning the car on and it started. But it could only idle. As soon as I pulled the throttle it would die. Came to the forum and read a lot. Tried the Sea foam like many recommended and drove it around for 15 miles on idle, while doing so I practiced in a parking lot at idle speeds. Cornering and braking, well anyways we felt like one, me and my new acquired bike. but it didn't work,

I came back to the forums and read a post with pictures about doing some mods to your bike and it included changing the needles. forgive me I dont remember the name but it helped. I removed the carb, pulled the needles and cleaned them. They were clogged bad with a tar like substance. Replaced the carb and connected everything back and it ran fine. Bought a new battery and charged it overnight and drove it to emissions today. But it failed. It said my CO carbon monoxide failed. Said my Idle standard should be 5.50 and I was at 9.51.

Could it be that the Sea Foam is affecting the reading or did I miss some carb adjustments?

Thanks for all your help.