Honda CB750K-7

[smp4616]

I just bought a cb750, and have been doing some overhauling, the last project was a carb rebuild; I've got the carbs back on the bike and it has a really hard time starting now, though it runs fine otherwise, another thing related to this is the idle speed seems to climb higher the longer I run the bike. I synchronized the carbs, but I can't find a shop tachometer to do the idle circuit adjustment, any suggestions as to what this problem is caused by?

[CORSCO]

Are you running it with the airbox on or off? IF off, try re-installing it to see if that cures it. If on, sounds like an air leak. How are your manifolds?