Need your input again (PICTURES)

[kml.krk]

ayayay,
that's really not a good time for my bike to misbehave 

this is one of my busiest semesters at school and I don't have much time to play with bike...

I will do what you guys suggested, probably on Saturday, if I have time.
I hope it is something easy so I can fix it in as little time as possible and still go fishing on Sunday 

[kml.krk]

I got it! It's fixed!

Yeah, I am so happy, bike didn't feel so smooth in a long time!

It was the cap on the left carb that was broken and let air in.
The cap wasn't OEM to begin with.
It got damaged few years ago and I replaced it with something custom made.
After few years of heat abuse the custom solution failed...

Today I replaced it with another custom solution, but I ordered OEM cap from bikebandit.
As soon as it gets here I will replace my custom thing with OEM cap.

Can someone explain to me why this hole wasn't plugged in factory for good? I know it's used for carb balancing, so is it the reason it wasn't plugged shut?

Thanks for your help!
ride safe
KML

[centuryghost]

Good to hear! 

Yeah, those holes are needed for use with a carb balancer.

[JB848]

I have to agree with the prior posts you have an air leak some where. I recently rebuilt a 30 year old Chain saw and you might not think this is relevant but it is. I disassembled the damed thing and found nothing. I put it all together and in the process started it with some of the cover off. I saw in that process a bubble and Bubbles in the fuel line. In the whole machinations of a carburetor a small are leak is very bad. I replaced the fuel lines and the whole carb kit to include the gas metalic screen an voila! All fixed!